[PyQt] [Solved]Multiply a number to a DoubleSpinBox

[Extra]

Hello,

I'm trying to make a sellPrice variable that takes in the user's input from the Price Input that I have and multiplies 1.10 to it.

This is a snippet of my PriceInput:

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self.PriceInput = QtWidgets.QDoubleSpinBox(self.centralwidget)        self.PriceInput.setStyleSheet("background-color: rgb(255, 255, 255);")        self.PriceInput.setObjectName("PriceInput")        self.formLayout_2.setWidget(5, QtWidgets.QFormLayout.FieldRole, self.PriceInput)

And these are the variables I have that store the user's input:

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#Store the user's inputs ItemName = self.NameInput.text() Quantity = self.QuantityInput.text() Price = self.PriceInput.text() Description = self.DescriptionInput.toPlainText() Category = self.CategoryInput.currentText() Location = self.LocationInput.text() Barcode = self.BarcodeInput.text() Length = self.spinBox.value() sellPrice = Price * 1.10 mylist = [ItemName, Quantity, Price, sellPrice, Description, Category, Location, Length, Barcode]

If I try to run my code:

Error:
    sellPrice = Price * 1.10
TypeError: can't multiply sequence by non-int of type 'float'

How do I fix this?

Thanks in advance.

This is my full code:

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from PyQt5 import QtCore, QtGui, QtWidgets import sqlite3     class Ui_AddItemMenu(QtWidgets.QMainWindow):     def __init__(self, parent = None):         super(Ui_AddItemMenu, self).__init__(parent)         self.setObjectName("AddItemMenu")         self.resize(804, 638)         self.setStyleSheet("background-color: rgb(0, 170, 255);")         self.centralwidget = QtWidgets.QWidget()         self.centralwidget.setObjectName("centralwidget")         self.formLayout_2 = QtWidgets.QFormLayout(self.centralwidget)         self.formLayout_2.setObjectName("formLayout_2")         self.AddItemTitle = QtWidgets.QLabel(self.centralwidget)         font = QtGui.QFont()         font.setPointSize(15)         font.setBold(True)         font.setWeight(75)         self.AddItemTitle.setFont(font)         self.AddItemTitle.setAlignment(QtCore.Qt.AlignCenter)         self.AddItemTitle.setObjectName("AddItemTitle")         self.formLayout_2.setWidget(0, QtWidgets.QFormLayout.SpanningRole, self.AddItemTitle)         self.NameLabel = QtWidgets.QLabel(self.centralwidget)         font = QtGui.QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.NameLabel.setFont(font)         self.NameLabel.setObjectName("NameLabel")         self.formLayout_2.setWidget(1, QtWidgets.QFormLayout.LabelRole, self.NameLabel)         self.NameInput = QtWidgets.QLineEdit(self.centralwidget)         self.NameInput.setStyleSheet("background-color: rgb(255, 255, 255);")         self.NameInput.setText("")         self.NameInput.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter)         self.NameInput.setObjectName("NameInput")         self.formLayout_2.setWidget(1, QtWidgets.QFormLayout.FieldRole, self.NameInput)         spacerItem = QtWidgets.QSpacerItem(0, 5, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Fixed)         self.formLayout_2.setItem(2, QtWidgets.QFormLayout.SpanningRole, spacerItem)         self.QuantityLabel = QtWidgets.QLabel(self.centralwidget)         font = QtGui.QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.QuantityLabel.setFont(font)         self.QuantityLabel.setObjectName("QuantityLabel")         self.formLayout_2.setWidget(3, QtWidgets.QFormLayout.LabelRole, self.QuantityLabel)         self.QuantityInput = QtWidgets.QSpinBox(self.centralwidget)         self.QuantityInput.setStyleSheet("background-color: rgb(255, 255, 255);")         self.QuantityInput.setObjectName("QuantityInput")         self.formLayout_2.setWidget(3, QtWidgets.QFormLayout.FieldRole, self.QuantityInput)         spacerItem1 = QtWidgets.QSpacerItem(0, 5, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Fixed)         self.formLayout_2.setItem(4, QtWidgets.QFormLayout.FieldRole, spacerItem1)         self.PriceLabel = QtWidgets.QLabel(self.centralwidget)         font = QtGui.QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.PriceLabel.setFont(font)         self.PriceLabel.setObjectName("PriceLabel")         self.formLayout_2.setWidget(5, QtWidgets.QFormLayout.LabelRole, self.PriceLabel)         self.PriceInput = QtWidgets.QDoubleSpinBox(self.centralwidget)         self.PriceInput.setStyleSheet("background-color: rgb(255, 255, 255);")         self.PriceInput.setObjectName("PriceInput")         self.formLayout_2.setWidget(5, QtWidgets.QFormLayout.FieldRole, self.PriceInput)         spacerItem2 = QtWidgets.QSpacerItem(20, 5, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Fixed)         self.formLayout_2.setItem(6, QtWidgets.QFormLayout.FieldRole, spacerItem2)         self.DescriptionLabel = QtWidgets.QLabel(self.centralwidget)         font = QtGui.QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.DescriptionLabel.setFont(font)         self.DescriptionLabel.setObjectName("DescriptionLabel")         self.formLayout_2.setWidget(7, QtWidgets.QFormLayout.LabelRole, self.DescriptionLabel)         self.DescriptionInput = QtWidgets.QPlainTextEdit(self.centralwidget)         self.DescriptionInput.setStyleSheet("background-color: rgb(255, 255, 255);")         self.DescriptionInput.setObjectName("DescriptionInput")         self.formLayout_2.setWidget(7, QtWidgets.QFormLayout.FieldRole, self.DescriptionInput)         self.CategoryLabel = QtWidgets.QLabel(self.centralwidget)         font = QtGui.QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.CategoryLabel.setFont(font)         self.CategoryLabel.setObjectName("CategoryLabel")         self.formLayout_2.setWidget(8, QtWidgets.QFormLayout.LabelRole, self.CategoryLabel)         self.CategoryInput = QtWidgets.QComboBox(self.centralwidget)         self.CategoryInput.setStyleSheet("background-color: rgb(225, 225, 225);")         self.CategoryInput.setObjectName("CategoryInput")         self.formLayout_2.setWidget(8, QtWidgets.QFormLayout.FieldRole, self.CategoryInput)         spacerItem3 = QtWidgets.QSpacerItem(20, 5, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Fixed)         self.formLayout_2.setItem(9, QtWidgets.QFormLayout.FieldRole, spacerItem3)         self.LocationLabel = QtWidgets.QLabel(self.centralwidget)         font = QtGui.QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.LocationLabel.setFont(font)         self.LocationLabel.setObjectName("LocationLabel")         self.formLayout_2.setWidget(10, QtWidgets.QFormLayout.LabelRole, self.LocationLabel)         self.LocationInput = QtWidgets.QLineEdit(self.centralwidget)         self.LocationInput.setStyleSheet("background-color: rgb(255, 255, 255);")         self.LocationInput.setObjectName("LocationInput")         self.formLayout_2.setWidget(10, QtWidgets.QFormLayout.FieldRole, self.LocationInput)         spacerItem4 = QtWidgets.QSpacerItem(20, 5, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Fixed)         self.formLayout_2.setItem(11, QtWidgets.QFormLayout.FieldRole, spacerItem4)         self.BarcodeLabel = QtWidgets.QLabel(self.centralwidget)         font = QtGui.QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.BarcodeLabel.setFont(font)         self.BarcodeLabel.setObjectName("BarcodeLabel")         self.formLayout_2.setWidget(12, QtWidgets.QFormLayout.LabelRole, self.BarcodeLabel)         self.BarcodeInput = QtWidgets.QLineEdit(self.centralwidget)         self.BarcodeInput.setStyleSheet("background-color: rgb(255, 255, 255);")         self.BarcodeInput.setObjectName("BarcodeInput")         self.formLayout_2.setWidget(12, QtWidgets.QFormLayout.FieldRole, self.BarcodeInput)         spacerItem5 = QtWidgets.QSpacerItem(0, 5, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Fixed)         self.formLayout_2.setItem(14, QtWidgets.QFormLayout.FieldRole, spacerItem5)         self.label = QtWidgets.QLabel(self.centralwidget)         font = QtGui.QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.label.setFont(font)         self.label.setObjectName("label")         self.formLayout_2.setWidget(15, QtWidgets.QFormLayout.LabelRole, self.label)         self.spinBox = QtWidgets.QSpinBox(self.centralwidget)         self.spinBox.setStyleSheet("background-color: rgb(255, 255, 255);")         self.spinBox.setObjectName("spinBox")         self.formLayout_2.setWidget(15, QtWidgets.QFormLayout.FieldRole, self.spinBox)         self.label_2 = QtWidgets.QLabel(self.centralwidget)         font = QtGui.QFont()         font.setBold(False)         font.setItalic(True)         font.setWeight(50)         self.label_2.setFont(font)         self.label_2.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter)         self.label_2.setObjectName("label_2")         self.formLayout_2.setWidget(16, QtWidgets.QFormLayout.FieldRole, self.label_2)         spacerItem6 = QtWidgets.QSpacerItem(20, 25, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Fixed)         self.formLayout_2.setItem(17, QtWidgets.QFormLayout.FieldRole, spacerItem6)         self.pushButton = QtWidgets.QPushButton(self.centralwidget)         self.pushButton.setMinimumSize(QtCore.QSize(0, 0))         self.pushButton.setMaximumSize(QtCore.QSize(16777215, 16777215))         font = QtGui.QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.pushButton.setFont(font)         self.pushButton.setLayoutDirection(QtCore.Qt.LeftToRight)         self.pushButton.setStyleSheet("background-color: rgb(225, 225, 225);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-color: black;\n" "padding: 4px;")         self.pushButton.setObjectName("pushButton")         self.formLayout_2.setWidget(18, QtWidgets.QFormLayout.FieldRole, self.pushButton)         self.label_3 = QtWidgets.QLabel(self.centralwidget)         font = QtGui.QFont()         font.setItalic(True)         self.label_3.setFont(font)         self.label_3.setObjectName("label_3")         self.formLayout_2.setWidget(13, QtWidgets.QFormLayout.FieldRole, self.label_3)         self.setCentralWidget(self.centralwidget)         self.statusbar = QtWidgets.QStatusBar()         self.statusbar.setObjectName("statusbar")         self.setStatusBar(self.statusbar)           self.retranslateUi()         QtCore.QMetaObject.connectSlotsByName(self)       def retranslateUi(self):         _translate = QtCore.QCoreApplication.translate         self.setWindowTitle(_translate("AddItemMenu", "MainWindow"))         self.AddItemTitle.setText(_translate("AddItemMenu", "Add Item Info"))         self.NameLabel.setText(_translate("AddItemMenu", "Name"))         self.QuantityLabel.setText(_translate("AddItemMenu", "Quantity"))         self.PriceLabel.setText(_translate("AddItemMenu", "Price (per unit)"))         self.DescriptionLabel.setText(_translate("AddItemMenu", "Description"))         self.CategoryLabel.setText(_translate("AddItemMenu", "Category"))         self.LocationLabel.setText(_translate("AddItemMenu", "Location"))         self.BarcodeLabel.setText(_translate("AddItemMenu", "Barcode #"))         self.label.setText(_translate("AddItemMenu", "Length (ft)"))         self.label_2.setText(_translate("AddItemMenu", "*If the item is wire, please provide it\'s length in feet. If not, leave this field as is."))         self.pushButton.setText(_translate("AddItemMenu", "Submit"))         self.label_3.setText(_translate("AddItemMenu", "*Please generate a custom barcode for this item and enter that barcode number in this field "))   #---------------------------------------------------------------------------------------------------- #                                   Values for Categories #----------------------------------------------------------------------------------------------------         self.CategoryInput.addItems(['N/A','Ballast','Boxes','Breakers','Bulbs','Panels/Disconnects',                                     'Pipes','Small Parts', 'Wire', 'Other']) #----------------------------------------------------------------------------------------------------   #---------------------------------------------------------------------------------------------------- #                                       Button Actions #----------------------------------------------------------------------------------------------------         #------------------------------------------                         #Submit Button         #------------------------------------------         #When the Submit button is clicked -> submitClicked Function         SubmitButton = self.pushButton         SubmitButton.clicked.connect(self.SubmitClicked)         #------------------------------------------ #----------------------------------     #Submit Function     def SubmitClicked(self):         #Store the user's inputs         ItemName = self.NameInput.text()         Quantity = self.QuantityInput.text()         Price = self.PriceInput.text()         Description = self.DescriptionInput.toPlainText()         Category = self.CategoryInput.currentText()         Location = self.LocationInput.text()         Barcode = self.BarcodeInput.text()         Length = self.spinBox.value()         sellPrice = Price * 1.10         mylist = [ItemName, Quantity, Price, sellPrice, Description, Category, Location, Length, Barcode]           #Print in terminal for testing:         print("The Submit Button was clicked")         print(ItemName, Quantity, Price, Description, Category, Location, Barcode, Length)           #Connect to the inventory database (inventory.db)         connection = sqlite3.connect("inventory.db")         cursor = connection.cursor()               cursor = connection.cursor()           cursor.execute('''             insert into items (name, quantity, price, sell_price, description, category, location, Length_Ft, Barcode)             values (?,?,?,?,?,?,?,?,?)             ''', mylist)         connection.commit()           #Close the connection         connection.close()           #Switch from this screen to the AdminMenu         #(Import AdminMenu here to prevent circular import error)         from AdminMenu import Ui_MainDisplay         self.win = Ui_MainDisplay() #Define LoginScreen         self.win.show() #Show Login Screen         self.close() #Close this screen (AdminMenu) #---------------------------------- #----------------------------------------------------------------------------------------------------     if __name__ == "__main__":     import sys     app = QtWidgets.QApplication(sys.argv)     ui = Ui_AddItemMenu()     ui.show()     sys.exit(app.exec_())

[Axel_Erfurt]

sellPrice = float(Price.replace(",", ".")) * 1.10

[Extra]

sellPrice = float(Price.replace(",", ".")) * 1.10

sellPrice = float(Price.replace(",", ".")) * 1.10

Thanks, that worked!

I do have one more question though.
I'm trying to delete a row from the Table and I got it to delete from the InventoryDisplay (the table on the screen), but when I click my refresh button the row I "deleted" pops back up.
(I delete the rows by clicking the small number at the side of the table which highlights the whole row and then I click my delete button)

How do I get it so it actually deletes the row from the SQLite table and not just the screen?

Here's what I have so far:

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#----------------------------------     #RemoveItem Function     def RemoveItemClicked(self):         #Print in terminal for testing:         print("The Delete Item Button was clicked")           #Delete Items from the Inventory         indices = self.InventoryDisplay.selectionModel().selectedRows()         for index in sorted(indices):                 x = self.InventoryDisplay.removeRow(index.row())                 connection = sqlite3.connect("inventory.db")                 cursor = connection.cursor()                 cursor.execute("DELETE FROM items WHERE id = ?", (x,))                 connection.commit()                 connection.close() #----------------------------------

Full code:

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import sys from PyQt5 import QtWidgets from PyQt5.QtWidgets import (QApplication, QWidget, QPushButton, QMainWindow,                                 QLabel, QLineEdit, QTableWidget, QTableWidgetItem,                                 QGridLayout, QVBoxLayout, QSizePolicy, QSpacerItem) from PyQt5.QtCore import Qt, QMetaObject, QCoreApplication from PyQt5.QtGui import QFont   import sqlite3   from AddItemScreen import Ui_AddItemMenu   class Ui_MainDisplay(QMainWindow):     def __init__(self, parent = None):         super(Ui_MainDisplay, self).__init__(parent)         self.setObjectName("MainDisplay")         self.setGeometry(0, 0, 1123, 903)         self.setStyleSheet("background-color: rgb(0, 170, 255);")         self.centralwidget = QWidget(self)         self.centralwidget.setObjectName("centralwidget")         self.gridLayout = QGridLayout(self.centralwidget)         self.gridLayout.setObjectName("gridLayout")         self.verticalLayout = QVBoxLayout()         self.verticalLayout.setContentsMargins(-1, 0, -1, 0)         self.verticalLayout.setSpacing(6)         self.verticalLayout.setObjectName("verticalLayout")         self.AddItemButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.AddItemButton.setFont(font)         self.AddItemButton.setStyleSheet("background-color: rgb(85, 255, 0);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "\n" "")         self.AddItemButton.setObjectName("AddItemButton")         self.verticalLayout.addWidget(self.AddItemButton)         self.DeleteItemButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.DeleteItemButton.setFont(font)         self.DeleteItemButton.setStyleSheet("background-color: rgb(255, 65, 68);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.DeleteItemButton.setObjectName("DeleteItemButton")         self.verticalLayout.addWidget(self.DeleteItemButton)         self.CheckoutButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.CheckoutButton.setFont(font)         self.CheckoutButton.setStyleSheet("background-color: rgb(255, 255, 0);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.CheckoutButton.setObjectName("CheckoutButton")         self.verticalLayout.addWidget(self.CheckoutButton)         self.ReturnButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.ReturnButton.setFont(font)         self.ReturnButton.setStyleSheet("background-color: rgb(255, 170, 32);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.ReturnButton.setObjectName("ReturnButton")         self.verticalLayout.addWidget(self.ReturnButton)         self.ScanBarcodeButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.ScanBarcodeButton.setFont(font)         self.ScanBarcodeButton.setStyleSheet("background-color: rgb(211, 211, 211);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.ScanBarcodeButton.setObjectName("ScanBarcodeButton")         self.verticalLayout.addWidget(self.ScanBarcodeButton)         self.MoreInfoButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.MoreInfoButton.setFont(font)         self.MoreInfoButton.setStyleSheet("background-color: rgb(196, 17, 255);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;")         self.MoreInfoButton.setObjectName("MoreInfoButton")         self.verticalLayout.addWidget(self.MoreInfoButton)         self.RefreshButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.RefreshButton.setFont(font)         self.RefreshButton.setStyleSheet("background-color: rgb(0, 255, 255);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "\n" "")         self.RefreshButton.setObjectName("RefreshButton")         self.verticalLayout.addWidget(self.RefreshButton)         spacerItem = QSpacerItem(20, 40, QSizePolicy.Policy.Minimum, QSizePolicy.Policy.Expanding)         self.verticalLayout.addItem(spacerItem)         self.LogoutButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.LogoutButton.setFont(font)         self.LogoutButton.setStyleSheet("background-color: rgb(255, 255, 255);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.LogoutButton.setObjectName("LogoutButton")         self.verticalLayout.addWidget(self.LogoutButton)         self.gridLayout.addLayout(self.verticalLayout, 4, 3, 1, 1)         self.Header = QLabel(self.centralwidget)         font = QFont()         font.setPointSize(15)         font.setBold(True)         font.setWeight(75)         self.Header.setFont(font)         self.Header.setStyleSheet("background-color: rgb(0, 0, 0);\n" "color: rgb(255, 255, 255);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;")         self.Header.setAlignment(Qt.AlignmentFlag.AlignCenter)         self.Header.setObjectName("Header")         self.gridLayout.addWidget(self.Header, 0, 1, 1, 3)         self.SearchButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.SearchButton.setFont(font)         self.SearchButton.setStyleSheet("background-color: rgb(211, 211, 211);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.SearchButton.setObjectName("SearchButton")         self.gridLayout.addWidget(self.SearchButton, 2, 1, 1, 1)         self.SearchBar = QLineEdit(self.centralwidget)         self.SearchBar.setStyleSheet("background-color: rgb(255, 255, 255);")         self.SearchBar.setObjectName("SearchBar")         self.gridLayout.addWidget(self.SearchBar, 2, 2, 1, 1)         self.InventoryDisplay = QTableWidget(self.centralwidget)         font = QFont()         font.setBold(False)         font.setWeight(50)         self.InventoryDisplay.setFont(font)         self.InventoryDisplay.setStyleSheet("background-color: rgb(255, 255, 255);\n" "")         self.InventoryDisplay.setObjectName("InventoryDisplay")         self.InventoryDisplay.setColumnCount(11)         self.InventoryDisplay.setRowCount(0)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(0, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(1, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(2, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(3, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(4, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(5, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(6, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(7, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(8, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(9, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(10, item)         self.gridLayout.addWidget(self.InventoryDisplay, 4, 1, 1, 2)         self.setCentralWidget(self.centralwidget)         self.statusbar = self.statusBar()         self.statusbar.setObjectName("statusbar")         #self.setStatusBar(self.statusbar)           #Display the inventory         self.DisplayInventory()   #---------------------------------------------------------------------------------------------------- #                                 Display Inventory #----------------------------------------------------------------------------------------------------       def DisplayInventory(self):         connection = sqlite3.connect("inventory.db")         cursor = connection.cursor()         cursor.execute('select * from items')         row = 0         self.InventoryDisplay.setRowCount(40)         while True:                 form = cursor.fetchone()                 if form == None:                         break                 for column, item in enumerate(form):                         self.InventoryDisplay.setItem(row, column, QTableWidgetItem(str(item)))                 print(str(item))                 row += 1         connection.close() #----------------------------------------------------------------------------------------------------             self.retranslateUi(self)         QMetaObject.connectSlotsByName(self)         def retranslateUi(self, MainDisplay):         _translate = QCoreApplication.translate         self.setWindowTitle(_translate("MainDisplay", "AdminMenu"))         self.AddItemButton.setText(_translate("MainDisplay", "Add Item"))         self.DeleteItemButton.setText(_translate("MainDisplay", "Delete Item"))         self.CheckoutButton.setText(_translate("MainDisplay", "Check Out"))         self.ReturnButton.setText(_translate("MainDisplay", "Return"))         self.ScanBarcodeButton.setText(_translate("MainDisplay", "Scan Barcode"))         self.MoreInfoButton.setText(_translate("MainDisplay", "More Info"))         self.RefreshButton.setText(_translate("MainDisplay", "Refresh"))         self.LogoutButton.setText(_translate("MainDisplay", "Log Out"))         self.Header.setText(_translate("MainDisplay", "Admin Menu"))         self.SearchButton.setText(_translate("MainDisplay", "Search"))         item = self.InventoryDisplay.horizontalHeaderItem(0)         item.setText(_translate("MainDisplay", "ID"))         item = self.InventoryDisplay.horizontalHeaderItem(1)         item.setText(_translate("MainDisplay", "Name"))         item = self.InventoryDisplay.horizontalHeaderItem(2)         item.setText(_translate("MainDisplay", "Quantity"))         item = self.InventoryDisplay.horizontalHeaderItem(3)         item.setText(_translate("MainDisplay", "Price ($)"))         item = self.InventoryDisplay.horizontalHeaderItem(4)         item.setText(_translate("MainDisplay", "Sell Price ($)"))         item = self.InventoryDisplay.horizontalHeaderItem(5)         item.setText(_translate("MainDisplay", "Description"))         item = self.InventoryDisplay.horizontalHeaderItem(6)         item.setText(_translate("MainDisplay", "Category"))         item = self.InventoryDisplay.horizontalHeaderItem(7)         item.setText(_translate("MainDisplay", "Location"))         item = self.InventoryDisplay.horizontalHeaderItem(8)         item.setText(_translate("MainDisplay", "Length (Ft)"))         item = self.InventoryDisplay.horizontalHeaderItem(9)         item.setText(_translate("MainDisplay", "Barcode #"))         item = self.InventoryDisplay.horizontalHeaderItem(10)         item.setText(_translate("MainDisplay", "Date Updated"))   #---------------------------------------------------------------------------------------------------- #                                       Button Actions #----------------------------------------------------------------------------------------------------         #------------------------------------------                         #Logout Button         #------------------------------------------         #When the Logout button is clicked -> LogoutClicked Function         LogoutButton = self.LogoutButton         LogoutButton.clicked.connect(self.LogoutClicked)         #------------------------------------------         #------------------------------------------                         #Add Item Button         #------------------------------------------         #When the AddItem button is clicked -> AddItem Function         AddItemButton = self.AddItemButton         AddItemButton.clicked.connect(self.AddItemClicked)         #------------------------------------------         #------------------------------------------                      #Remove Item Button         #------------------------------------------         #When the RemoveItem button is clicked -> RemoveItem Function         RemoveItemButton = self.DeleteItemButton         RemoveItemButton.clicked.connect(self.RemoveItemClicked)         #------------------------------------------         #------------------------------------------                      #Checkout Item Button         #------------------------------------------         #When the Checkout button is clicked -> Checkout Function         CheckoutButton = self.CheckoutButton         CheckoutButton.clicked.connect(self.CheckoutClicked)         #------------------------------------------         #------------------------------------------                      #Return Item Button         #------------------------------------------         #When the Return button is clicked -> Return Function         ReturnButton = self.ReturnButton         ReturnButton.clicked.connect(self.ReturnClicked)         #------------------------------------------         #------------------------------------------                      #Scan Barcode Button         #------------------------------------------         #When the Scan Barcode button is clicked -> ScanBarcode Function         ScanBarcodeButton = self.ScanBarcodeButton         ScanBarcodeButton.clicked.connect(self.ScanBarcodeClicked)         #------------------------------------------         #------------------------------------------                      #More Info Button         #------------------------------------------         #When the More Info button is clicked -> MoreInfo Function         MoreInfoButton = self.MoreInfoButton         MoreInfoButton.clicked.connect(self.MoreInfoClicked)         #------------------------------------------         #------------------------------------------                      #Refresh Button         #------------------------------------------         #When the More Info button is clicked -> MoreInfo Function         RefreshButton = self.RefreshButton         RefreshButton.clicked.connect(self.RefreshClicked)         #------------------------------------------         #------------------------------------------                      #Search Button         #------------------------------------------         #When the More Info button is clicked -> MoreInfo Function         SearchButton = self.SearchButton         SearchButton.clicked.connect(self.SearchClicked)         #------------------------------------------ #----------------------------------     #Logout Function     def LogoutClicked(self):         #Print in terminal for testing:         print("The Logout Button was clicked")         #Switch from this screen to the LoginScreen         #(Import LoginScreen here to prevent circular import error)         from LoginScreen import Ui_Loginscreen         self.win = Ui_Loginscreen() #Define LoginScreen         self.win.show() #Show Login Screen         self.close() #Close this screen (AdminMenu) #---------------------------------- #----------------------------------     #AddItem Function     def AddItemClicked(self):         #Print in terminal for testing:         print("The Add Item Button was clicked")         #Switch from this screen to the AddItems Screen (Scene Swap):         self.win = Ui_AddItemMenu()         self.win.show()         self.close() #---------------------------------- #----------------------------------     #RemoveItem Function     def RemoveItemClicked(self):         #Print in terminal for testing:         print("The Delete Item Button was clicked")           #Delete Items from the Inventory         indices = self.InventoryDisplay.selectionModel().selectedRows()         for index in sorted(indices):                 x = self.InventoryDisplay.removeRow(index.row())                 connection = sqlite3.connect("inventory.db")                 cursor = connection.cursor()                 cursor.execute("DELETE FROM items WHERE id = ?", (x,))                 connection.commit()                 connection.close() #---------------------------------- #----------------------------------     #Checkout Function     def CheckoutClicked(self):         #Print in terminal for testing:         print("The Checkout Button was clicked") #---------------------------------- #----------------------------------     #Return Function     def ReturnClicked(self):         #Print in terminal for testing:         print("The Return Button was clicked") #---------------------------------- #----------------------------------     #ScanBarcode Function     def ScanBarcodeClicked(self):         #Print in terminal for testing:         print("The Scan Barcode Button was clicked") #---------------------------------- #----------------------------------     #MoreInfo Function     def MoreInfoClicked(self):         #Print in terminal for testing:         print("The More Info Button was clicked") #---------------------------------- #----------------------------------     #Refresh Function     def RefreshClicked(self):         #Print in terminal for testing:         print("The Refresh Button was clicked")         #Close and reopen the app (Refresh)         self.win = Ui_MainDisplay()         self.win.show()         self.close() #---------------------------------- #----------------------------------     #Search Function     def SearchClicked(self):         #Print in terminal for testing:         print("The Search Button was clicked") #---------------------------------- #----------------------------------------------------------------------------------------------------      if __name__ == '__main__':     app = QApplication(sys.argv)     win = Ui_MainDisplay()     win.show()         sys.exit(app.exec_())

[Axel_Erfurt]

Have you checked whether the entry was really deleted in inventory.db?

[Extra]

It was not really deleted in inventory.db. I think it has something to do with my DELETE FROM statement because I don't think I'm grabbing the index/row properly from the InventoryDisplay table on my screen/GUI and telling SQLite to delete it correctly.

[Axel_Erfurt]

If you work with sqlite you should use QtSql.QSqlTableModel() preferably with QTableView.

Then you can delete a row and the database will be updated automatically.

[Extra]

Just out of curiosity, is there a way to get the row number (the small numbers on the QtTable) that way I could set the Item's Id to the row number so if I were to delete the row the items below it would have their Id's subtracted by 1 to compensate for the deleted row?
Or how do I get/store the item's id from the id column on the Table when it's selected?

And thanks for the input. I'll start looking into QtSql.QSqlTableModel() and hopefully I can get it to work..

[Extra]

Got it.
I'm now able to delete a selected row.

This is what I did:

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#RemoveItem Function def RemoveItemClicked(self):     #Print in terminal for testing:     print("The Delete Item Button was clicked")       #Delete Items from the Inventory     index = self.InventoryDisplay.currentIndex()     NewIndex = self.InventoryDisplay.model().index(index.row(), 0)     print('Index is :',NewIndex)     indexID = self.InventoryDisplay.model().data(NewIndex)     print(indexID)       connection = sqlite3.connect("inventory.db")     cursor = connection.cursor()     cursor.execute("DELETE FROM items WHERE id = ?", (indexID,))     connection.commit()     connection.close()

[Axel_Erfurt]

That's an example for QtSql

create Database

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from PyQt5.QtSql import QSqlQuery, QSqlDatabase from PyQt5.QtWidgets import QMessageBox, QApplication, qApp    def createDB():    db = QSqlDatabase.addDatabase('QSQLITE')    db.setDatabaseName('inventory2.db')           if not db.open():       QMessageBox.critical(None, qApp.tr("Cannot open database"),          qApp.tr("Unable to establish a database connection.\n"             "This example needs SQLite support. Please read "             "the Qt SQL driver documentation for information "             "how to build it.\n\n" "Click Cancel to exit."),          QMessageBox.Cancel)                      return False               query = QSqlQuery()           query.exec_("""create table items (ID INTEGER PRIMARY KEY  AUTOINCREMENT,                 NAME           TEXT,                 Quantity       INT     NOT NULL,                 Price          DOUBLE  NOT NULL,                 Sell_Price     DOUBLE  NOT NULL,                 Description    TEXT,                 Category       TEXT,                 Location       TEXT,                 Length_Ft      INT,                 Barcode        INT,                 Image          BLOB,                 Date Updated   datetime default current_timestamp)""")               query.exec_("insert into items values(0, 'MG996R ', '10', '5', '6', 'A Servo', 'Servos', 'S-1', '', '', '', '' )")    query.exec_("insert into items values(1, 'MG997R ', '12', '6,45', '6,88', 'A Servo', 'Servos', 'S-1', '', '', '', '' )")       return True        if __name__ == '__main__':    import sys    app = QApplication(sys.argv)    createDB()

use it, changes are immediately transferred to the database.

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from PyQt5.QtSql import QSqlDatabase, QSqlTableModel from PyQt5.QtWidgets import (QApplication, QMainWindow, QDialog, QTableView,                                 QGridLayout, QPushButton, QWidget) ################################### btnWidth = 100 class MyWindow(QMainWindow):     def __init__(self, fileName, parent=None):         super(MyWindow, self).__init__(parent)         self.db = QSqlDatabase.addDatabase('QSQLITE')         self.db.setDatabaseName('inventory2.db')         self.model = QSqlTableModel()         self.delrow = -1         self.initializeModel()           self.sbar = self.statusBar()                   self.viewer = QTableView()         self.viewer.setModel(self.model)         self.viewer.clicked.connect(self.findrow)         self.viewer.selectionModel().selectionChanged.connect(self.getCellText)                   self.dlg = QDialog()         self.layout = QGridLayout()         self.layout.addWidget(self.viewer,0, 0, 1, 3)                   button = QPushButton("add a row")         button.setFixedWidth(btnWidth)         button.clicked.connect(self.addrow)         self.layout.addWidget(button, 1, 0)                   btn1 = QPushButton("delete a row")         btn1.setFixedWidth(btnWidth)         btn1.clicked.connect(self.delete_row)         self.layout.addWidget(btn1,1, 1)           self.myWidget = QWidget()         self.myWidget.setLayout(self.layout)             self.setCentralWidget(self.myWidget)         self.setGeometry(0,0,800,550)         self.setWindowTitle("Database Demo")         self.sbar.showMessage("Ready")       def initializeModel(self):        self.model.setTable('items')        self.model.setEditStrategy(QSqlTableModel.OnFieldChange)        self.model.select()        #self.model.setHeaderData(0, Qt.Horizontal, "Index")        #self.model.setHeaderData(1, Qt.Horizontal, "Name")        #self.model.setHeaderData(2, Qt.Horizontal, "Quantity")        #self.model.setHeaderData(3, Qt.Horizontal, "Price")        #self.model.setHeaderData(4, Qt.Horizontal, "Sell_Price")        #self.model.setHeaderData(5, Qt.Horizontal, "Description")        #self.model.setHeaderData(6, Qt.Horizontal, "Category")        #self.model.setHeaderData(7, Qt.Horizontal, "Location")        #self.model.setHeaderData(8, Qt.Horizontal, "Length_Ft ")        #self.model.setHeaderData(9, Qt.Horizontal, "Barcode ")        #self.model.setHeaderData(10, Qt.Horizontal, "Image ")        #self.model.setHeaderData(11, Qt.Horizontal, "Date ")                     def addrow(self):         print(self.model.rowCount())         ret = self.model.insertRows(self.model.rowCount(), 1)         print(ret)               def delete_row(self):         row = self.viewer.currentIndex().row()         self.model.removeRow(row)         self.initializeModel()         self.viewer.selectRow(row)               def findrow(self, i):         self.delrow = i.row()       def getCellText(self):         if self.viewer.selectedIndexes():             item = self.viewer.selectedIndexes()[0]             row = self.selectedRow()             column = self.selectedColumn()             if not item == None:                 name = item.data()                 self.sbar.showMessage(str(name))       def selectedRow(self):         if self.viewer.selectionModel().hasSelection():             row =  self.viewer.selectionModel().selectedIndexes()[0].row()             return int(row)       def selectedColumn(self):         column =  self.viewer.selectionModel().selectedIndexes()[0].column()         return int(column)   ###################################     if __name__ == "__main__":     import sys     app = QApplication(sys.argv)     app.setApplicationName('MyWindow')     main = MyWindow("")     main.show()     sys.exit(app.exec_())

[Extra]

Oh ya, that's much better.
Thanks.

I do have one more questions though:

(1) I got the QsqlTableView formatted to my GUI but now there's a gray box in the top left corner of the screen/GUI under the Window/App name and I don't know what it is, or how it got there (I have attached a screenshot of the GUI/Screen). Why is that there and how do I get rid of it?



Thanks again.

My full code:

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import sys from PyQt5 import QtWidgets from PyQt5.QtWidgets import (QApplication, QWidget, QPushButton, QMainWindow,                                 QLabel, QLineEdit, QTableWidget, QTableWidgetItem,                                 QGridLayout, QVBoxLayout, QSizePolicy, QSpacerItem,                                 QTableView) from PyQt5.QtCore import Qt, QMetaObject, QCoreApplication from PyQt5.QtGui import QFont import sqlite3 from AddItemScreen import Ui_AddItemMenu from Constants import MainDatabase from Test2 import spindemo   from PyQt5.QtSql import QSqlDatabase, QSqlTableModel   class Ui_MainDisplay(QMainWindow):     def __init__(self, parent = None):         super(Ui_MainDisplay, self).__init__(parent)         self.setObjectName("MainDisplay")         self.setGeometry(0, 0, 1123, 903)         self.setStyleSheet("background-color: rgb(0, 170, 255);")         self.centralwidget = QWidget(self)         self.centralwidget.setObjectName("centralwidget")         self.gridLayout = QGridLayout(self.centralwidget)         self.gridLayout.setObjectName("gridLayout")         self.verticalLayout = QVBoxLayout()         self.verticalLayout.setContentsMargins(-1, 0, -1, 0)         self.verticalLayout.setSpacing(6)         self.verticalLayout.setObjectName("verticalLayout")         self.AddItemButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.AddItemButton.setFont(font)         self.AddItemButton.setStyleSheet("background-color: rgb(85, 255, 0);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "\n" "")         self.AddItemButton.setObjectName("AddItemButton")         self.verticalLayout.addWidget(self.AddItemButton)         self.DeleteItemButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.DeleteItemButton.setFont(font)         self.DeleteItemButton.setStyleSheet("background-color: rgb(255, 65, 68);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.DeleteItemButton.setObjectName("DeleteItemButton")         self.verticalLayout.addWidget(self.DeleteItemButton)         self.CheckoutButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.CheckoutButton.setFont(font)         self.CheckoutButton.setStyleSheet("background-color: rgb(255, 255, 0);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.CheckoutButton.setObjectName("CheckoutButton")         self.verticalLayout.addWidget(self.CheckoutButton)         self.ReturnButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.ReturnButton.setFont(font)         self.ReturnButton.setStyleSheet("background-color: rgb(255, 170, 32);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.ReturnButton.setObjectName("ReturnButton")         self.verticalLayout.addWidget(self.ReturnButton)         self.ScanBarcodeButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.ScanBarcodeButton.setFont(font)         self.ScanBarcodeButton.setStyleSheet("background-color: rgb(211, 211, 211);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.ScanBarcodeButton.setObjectName("ScanBarcodeButton")         self.verticalLayout.addWidget(self.ScanBarcodeButton)         self.MoreInfoButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.MoreInfoButton.setFont(font)         self.MoreInfoButton.setStyleSheet("background-color: rgb(196, 17, 255);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;")         self.MoreInfoButton.setObjectName("MoreInfoButton")         self.verticalLayout.addWidget(self.MoreInfoButton)         self.RefreshButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.RefreshButton.setFont(font)         self.RefreshButton.setStyleSheet("background-color: rgb(0, 255, 255);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "\n" "")         self.RefreshButton.setObjectName("RefreshButton")         self.verticalLayout.addWidget(self.RefreshButton)         spacerItem = QSpacerItem(20, 40, QSizePolicy.Policy.Minimum, QSizePolicy.Policy.Expanding)         self.verticalLayout.addItem(spacerItem)         self.LogoutButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.LogoutButton.setFont(font)         self.LogoutButton.setStyleSheet("background-color: rgb(255, 255, 255);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.LogoutButton.setObjectName("LogoutButton")         self.verticalLayout.addWidget(self.LogoutButton)         self.gridLayout.addLayout(self.verticalLayout, 4, 3, 1, 1)         self.Header = QLabel(self.centralwidget)         font = QFont()         font.setPointSize(15)         font.setBold(True)         font.setWeight(75)         self.Header.setFont(font)         self.Header.setStyleSheet("background-color: rgb(0, 0, 0);\n" "color: rgb(255, 255, 255);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;")         self.Header.setAlignment(Qt.AlignmentFlag.AlignCenter)         self.Header.setObjectName("Header")         self.gridLayout.addWidget(self.Header, 0, 1, 1, 3)         self.SearchButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.SearchButton.setFont(font)         self.SearchButton.setStyleSheet("background-color: rgb(211, 211, 211);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.SearchButton.setObjectName("SearchButton")         self.gridLayout.addWidget(self.SearchButton, 2, 1, 1, 1)         self.SearchBar = QLineEdit(self.centralwidget)         self.SearchBar.setStyleSheet("background-color: rgb(255, 255, 255);")         self.SearchBar.setObjectName("SearchBar")         self.gridLayout.addWidget(self.SearchBar, 2, 2, 1, 1)         self.InventoryDisplay = QTableWidget(self.centralwidget)         font = QFont()         font.setBold(False)         font.setWeight(50)         self.InventoryDisplay.setFont(font)         self.InventoryDisplay.setStyleSheet("background-color: rgb(255, 255, 255);\n" "")         # self.InventoryDisplay.setObjectName("InventoryDisplay")         # self.InventoryDisplay.setColumnCount(11)         # self.InventoryDisplay.setRowCount(0)         # item = QTableWidgetItem()         # self.InventoryDisplay.setHorizontalHeaderItem(0, item)         # item = QTableWidgetItem()         # self.InventoryDisplay.setHorizontalHeaderItem(1, item)         # item = QTableWidgetItem()         # self.InventoryDisplay.setHorizontalHeaderItem(2, item)         # item = QTableWidgetItem()         # self.InventoryDisplay.setHorizontalHeaderItem(3, item)         # item = QTableWidgetItem()         # self.InventoryDisplay.setHorizontalHeaderItem(4, item)         # item = QTableWidgetItem()         # self.InventoryDisplay.setHorizontalHeaderItem(5, item)         # item = QTableWidgetItem()         # self.InventoryDisplay.setHorizontalHeaderItem(6, item)         # item = QTableWidgetItem()         # self.InventoryDisplay.setHorizontalHeaderItem(7, item)         # item = QTableWidgetItem()         # self.InventoryDisplay.setHorizontalHeaderItem(8, item)         # item = QTableWidgetItem()         # self.InventoryDisplay.setHorizontalHeaderItem(9, item)         # item = QTableWidgetItem()         # self.InventoryDisplay.setHorizontalHeaderItem(10, item)         # self.gridLayout.addWidget(self.InventoryDisplay, 4, 1, 1, 2)         # self.setCentralWidget(self.centralwidget)         # self.statusbar = self.statusBar()         # self.statusbar.setObjectName("statusbar")         #self.setStatusBar(self.statusbar)   #----------------------------------------------------------------------------------------------------         #Connect to Database         self.db = QSqlDatabase.addDatabase('QSQLITE')         self.db.setDatabaseName('inventory.db')         self.model = QSqlTableModel()         self.delrow = -1         self.initializeModel()           self.sbar = self.statusBar()           self.InventoryDisplay = QTableView()         self.InventoryDisplay.setModel(self.model)         self.InventoryDisplay.clicked.connect(self.findrow)         self.InventoryDisplay.selectionModel().selectionChanged.connect(self.getCellText)           # self.layout = QGridLayout()         # self.layout.addWidget(self.InventoryDisplay, 0, 0, 1, 3)         self.gridLayout.addWidget(self.InventoryDisplay, 4, 1, 1, 2)         self.setCentralWidget(self.centralwidget)                    # button = QPushButton("add a row")         # button.setFixedWidth(btnWidth)         # button.clicked.connect(self.addrow)         # self.layout.addWidget(button, 1, 0)                    # btn1 = QPushButton("delete a row")         # btn1.setFixedWidth(btnWidth)         # btn1.clicked.connect(self.delete_row)         # self.layout.addWidget(btn1,1, 1)            # self.myWidget = QWidget()         # self.myWidget.setLayout(self.layout)              # self.setCentralWidget(self.myWidget)         # self.setGeometry(0,0,800,550)         # self.setWindowTitle("Database Demo")         # self.sbar.showMessage("Ready")                   self.retranslateUi(self)         QMetaObject.connectSlotsByName(self)        def initializeModel(self):        self.model.setTable('items')        self.model.setEditStrategy(QSqlTableModel.OnFieldChange)        self.model.select()        #self.model.setHeaderData(0, Qt.Horizontal, "Index")        #self.model.setHeaderData(1, Qt.Horizontal, "Name")        #self.model.setHeaderData(2, Qt.Horizontal, "Quantity")        #self.model.setHeaderData(3, Qt.Horizontal, "Price")        #self.model.setHeaderData(4, Qt.Horizontal, "Sell_Price")        #self.model.setHeaderData(5, Qt.Horizontal, "Description")        #self.model.setHeaderData(6, Qt.Horizontal, "Category")        #self.model.setHeaderData(7, Qt.Horizontal, "Location")        #self.model.setHeaderData(8, Qt.Horizontal, "Length_Ft ")        #self.model.setHeaderData(9, Qt.Horizontal, "Barcode ")        #self.model.setHeaderData(10, Qt.Horizontal, "Image ")        #self.model.setHeaderData(11, Qt.Horizontal, "Date ")                      def addrow(self):         print(self.model.rowCount())         ret = self.model.insertRows(self.model.rowCount(), 1)         print(ret)                def delete_row(self):         row = self.InventoryDisplay.currentIndex().row()         self.model.removeRow(row)         self.initializeModel()         self.InventoryDisplay.selectRow(row)                def findrow(self, i):         self.delrow = i.row()        def getCellText(self):         if self.InventoryDisplay.selectedIndexes():             item = self.InventoryDisplay.selectedIndexes()[0]             row = self.selectedRow()             column = self.selectedColumn()             if not item == None:                 name = item.data()                 self.sbar.showMessage(str(name))        def selectedRow(self):         if self.InventoryDisplay.selectionModel().hasSelection():             row =  self.InventoryDisplay.selectionModel().selectedIndexes()[0].row()             return int(row)        def selectedColumn(self):         column =  self.InventoryDisplay.selectionModel().selectedIndexes()[0].column()         return int(column) #----------------------------------------------------------------------------------------------------           #Display the inventory         #self.DisplayInventory()   #---------------------------------------------------------------------------------------------------- #                                 Display Inventory #----------------------------------------------------------------------------------------------------       def DisplayInventory(self):         connection = sqlite3.connect(MainDatabase)         cursor = connection.cursor()         cursor.execute('SELECT * FROM items')         row = 0         self.InventoryDisplay.setRowCount(40)         while True:                 form = cursor.fetchone()                 if form == None:                         break                 for column, item in enumerate(form):                         self.InventoryDisplay.setItem(row, column, QTableWidgetItem(str(item)))                 print(str(item))                 row += 1         connection.close() #----------------------------------------------------------------------------------------------------           def retranslateUi(self, MainDisplay):         _translate = QCoreApplication.translate         self.setWindowTitle(_translate("MainDisplay", "AdminMenu"))         self.AddItemButton.setText(_translate("MainDisplay", "Add Item"))         self.DeleteItemButton.setText(_translate("MainDisplay", "Delete Item"))         self.CheckoutButton.setText(_translate("MainDisplay", "Check Out"))         self.ReturnButton.setText(_translate("MainDisplay", "Return"))         self.ScanBarcodeButton.setText(_translate("MainDisplay", "Scan Barcode"))         self.MoreInfoButton.setText(_translate("MainDisplay", "More Info"))         self.RefreshButton.setText(_translate("MainDisplay", "Refresh"))         self.LogoutButton.setText(_translate("MainDisplay", "Log Out"))         self.Header.setText(_translate("MainDisplay", "Admin Menu"))         self.SearchButton.setText(_translate("MainDisplay", "Search"))         # item = self.InventoryDisplay.horizontalHeaderItem(0)         # item.setText(_translate("MainDisplay", "ID"))         # item = self.InventoryDisplay.horizontalHeaderItem(1)         # item.setText(_translate("MainDisplay", "Name"))         # item = self.InventoryDisplay.horizontalHeaderItem(2)         # item.setText(_translate("MainDisplay", "Quantity"))         # item = self.InventoryDisplay.horizontalHeaderItem(3)         # item.setText(_translate("MainDisplay", "Price ($)"))         # item = self.InventoryDisplay.horizontalHeaderItem(4)         # item.setText(_translate("MainDisplay", "Sell Price ($)"))         # item = self.InventoryDisplay.horizontalHeaderItem(5)         # item.setText(_translate("MainDisplay", "Description"))         # item = self.InventoryDisplay.horizontalHeaderItem(6)         # item.setText(_translate("MainDisplay", "Category"))         # item = self.InventoryDisplay.horizontalHeaderItem(7)         # item.setText(_translate("MainDisplay", "Location"))         # item = self.InventoryDisplay.horizontalHeaderItem(8)         # item.setText(_translate("MainDisplay", "Length (Ft)"))         # item = self.InventoryDisplay.horizontalHeaderItem(9)         # item.setText(_translate("MainDisplay", "Barcode #"))         # item = self.InventoryDisplay.horizontalHeaderItem(10)         # item.setText(_translate("MainDisplay", "Date Updated"))   #---------------------------------------------------------------------------------------------------- #                                       Button Actions #----------------------------------------------------------------------------------------------------         #------------------------------------------                         #Logout Button         #------------------------------------------         #When the Logout button is clicked -> LogoutClicked Function         LogoutButton = self.LogoutButton         LogoutButton.clicked.connect(self.LogoutClicked)         #------------------------------------------         #------------------------------------------                         #Add Item Button         #------------------------------------------         #When the AddItem button is clicked -> AddItem Function         AddItemButton = self.AddItemButton         AddItemButton.clicked.connect(self.AddItemClicked)         #------------------------------------------         #------------------------------------------                      #Remove Item Button         #------------------------------------------         #When the RemoveItem button is clicked -> RemoveItem Function         RemoveItemButton = self.DeleteItemButton         RemoveItemButton.clicked.connect(self.RemoveItemClicked)         #------------------------------------------         #------------------------------------------                      #Checkout Item Button         #------------------------------------------         #When the Checkout button is clicked -> Checkout Function         CheckoutButton = self.CheckoutButton         CheckoutButton.clicked.connect(self.CheckoutClicked)         #------------------------------------------         #------------------------------------------                      #Return Item Button         #------------------------------------------         #When the Return button is clicked -> Return Function         ReturnButton = self.ReturnButton         ReturnButton.clicked.connect(self.ReturnClicked)         #------------------------------------------         #------------------------------------------                      #Scan Barcode Button         #------------------------------------------         #When the Scan Barcode button is clicked -> ScanBarcode Function         ScanBarcodeButton = self.ScanBarcodeButton         ScanBarcodeButton.clicked.connect(self.ScanBarcodeClicked)         #------------------------------------------         #------------------------------------------                      #More Info Button         #------------------------------------------         #When the More Info button is clicked -> MoreInfo Function         MoreInfoButton = self.MoreInfoButton         MoreInfoButton.clicked.connect(self.MoreInfoClicked)         #------------------------------------------         #------------------------------------------                      #Refresh Button         #------------------------------------------         #When the More Info button is clicked -> MoreInfo Function         RefreshButton = self.RefreshButton         RefreshButton.clicked.connect(self.RefreshClicked)         #------------------------------------------         #------------------------------------------                      #Search Button         #------------------------------------------         #When the More Info button is clicked -> MoreInfo Function         SearchButton = self.SearchButton         SearchButton.clicked.connect(self.SearchClicked)         #------------------------------------------ #----------------------------------     #Logout Function     def LogoutClicked(self):         #Print in terminal for testing:         print("The Logout Button was clicked")         #Switch from this screen to the LoginScreen         #(Import LoginScreen here to prevent circular import error)         from LoginScreen import Ui_Loginscreen         self.win = Ui_Loginscreen() #Define LoginScreen         self.win.show() #Show Login Screen         self.close() #Close this screen (AdminMenu) #---------------------------------- #----------------------------------     #AddItem Function     def AddItemClicked(self):         #Print in terminal for testing:         print("The Add Item Button was clicked")         #Switch from this screen to the AddItems Screen (Scene Swap):         self.win = Ui_AddItemMenu()         self.win.show()         self.close() #---------------------------------- #----------------------------------     #RemoveItem Function     def RemoveItemClicked(self):         #Print in terminal for testing:         print("The Delete Item Button was clicked")           #Delete Items from the Inventory         index = self.InventoryDisplay.currentIndex()         NewIndex = self.InventoryDisplay.model().index(index.row(), 0)         indexID = self.InventoryDisplay.model().data(NewIndex)         print(indexID)           connection = sqlite3.connect("inventory.db")         cursor = connection.cursor()         cursor.execute("DELETE FROM items WHERE id = ?", (indexID,))         connection.commit()         connection.close() #---------------------------------- #----------------------------------     #Checkout Function     def CheckoutClicked(self):         #Print in terminal for testing:         print("The Checkout Button was clicked")         #Switch from this screen to the AddItems Screen (Scene Swap):         self.win = spindemo()         self.win.show()         # self.close()         print() #---------------------------------- #----------------------------------     #Return Function     def ReturnClicked(self):         #Print in terminal for testing:         print("The Return Button was clicked") #---------------------------------- #----------------------------------     #ScanBarcode Function     def ScanBarcodeClicked(self):         #Print in terminal for testing:         print("The Scan Barcode Button was clicked") #---------------------------------- #----------------------------------     #MoreInfo Function     def MoreInfoClicked(self):         #Print in terminal for testing:         print("The More Info Button was clicked") #---------------------------------- #----------------------------------     #Refresh Function     def RefreshClicked(self):         #Print in terminal for testing:         print("The Refresh Button was clicked")         #Close and reopen the app (Refresh)         self.win = Ui_MainDisplay()         self.win.show()         self.close() #---------------------------------- #----------------------------------     #Search Function     def SearchClicked(self):         #Print in terminal for testing:         print("The Search Button was clicked") #---------------------------------- #----------------------------------------------------------------------------------------------------      if __name__ == '__main__':     app = QApplication(sys.argv)     win = Ui_MainDisplay()     win.show()       sys.exit(app.exec_())