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Help me make my looper/synth
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Help me make my looper/synth
#1
Hello I am on my 3rd week of learning Python2.7 and I am making a portable looper/synth that runs on Raspberry pi3 using a 16 button matrix from Adafruit called a Trellis that lights up when you press a button. There is a GUI that I have made that the idea is to have 16 button matrix for loading sounds into the Trellis. In GUI next to the 16 button matrix are four blue drop down combo boxes that you select the sound and then press one of the GUI's 16 red pad button matrix to load the sounds into the Trellis.

I am currently stuck at the getting the GUI's combo boxes connected to a folder that will contain wav files.

So can you help a noob out ? Here is the GUI code
# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'zip808stretchy.ui'
#
# Created by: PyQt4 UI code generator 4.11.4
#
# WARNING! All changes made in this file will be lost!

from PyQt4 import QtCore, QtGui

try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    def _fromUtf8(s):
        return s

try:
    _encoding = QtGui.QApplication.UnicodeUTF8
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig)

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName(_fromUtf8("MainWindow"))
        MainWindow.resize(970, 691)
        MainWindow.setStyleSheet(_fromUtf8("background-color: rgb(116, 116, 116);"))
        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
        self.gridLayout = QtGui.QGridLayout(self.centralwidget)
        self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
        self.pushButton_6 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_6.sizePolicy().hasHeightForWidth())
        self.pushButton_6.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_6.setFont(font)
        self.pushButton_6.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton_6.setObjectName(_fromUtf8("pushButton_6"))
        self.gridLayout.addWidget(self.pushButton_6, 1, 0, 1, 1)
        self.pushButton_15 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_15.sizePolicy().hasHeightForWidth())
        self.pushButton_15.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_15.setFont(font)
        self.pushButton_15.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton_15.setObjectName(_fromUtf8("pushButton_15"))
        self.gridLayout.addWidget(self.pushButton_15, 3, 2, 1, 1)
        self.pushButton_12 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_12.sizePolicy().hasHeightForWidth())
        self.pushButton_12.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_12.setFont(font)
        self.pushButton_12.setStyleSheet(_fromUtf8("\n"
"background-color: rgb(255, 85, 0);"))
        self.pushButton_12.setObjectName(_fromUtf8("pushButton_12"))
        self.gridLayout.addWidget(self.pushButton_12, 2, 2, 1, 1)
        self.pushButton_3 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_3.sizePolicy().hasHeightForWidth())
        self.pushButton_3.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_3.setFont(font)
        self.pushButton_3.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton_3.setObjectName(_fromUtf8("pushButton_3"))
        self.gridLayout.addWidget(self.pushButton_3, 0, 1, 1, 1)
        self.pushButton_2 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_2.sizePolicy().hasHeightForWidth())
        self.pushButton_2.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_2.setFont(font)
        self.pushButton_2.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton_2.setObjectName(_fromUtf8("pushButton_2"))
        self.gridLayout.addWidget(self.pushButton_2, 0, 2, 1, 1)
        self.pushButton_7 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_7.sizePolicy().hasHeightForWidth())
        self.pushButton_7.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_7.setFont(font)
        self.pushButton_7.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton_7.setObjectName(_fromUtf8("pushButton_7"))
        self.gridLayout.addWidget(self.pushButton_7, 2, 0, 1, 1)
        self.pushButton_9 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_9.sizePolicy().hasHeightForWidth())
        self.pushButton_9.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_9.setFont(font)
        self.pushButton_9.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton_9.setObjectName(_fromUtf8("pushButton_9"))
        self.gridLayout.addWidget(self.pushButton_9, 1, 2, 1, 1)
        self.pushButton_13 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_13.sizePolicy().hasHeightForWidth())
        self.pushButton_13.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_13.setFont(font)
        self.pushButton_13.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton_13.setObjectName(_fromUtf8("pushButton_13"))
        self.gridLayout.addWidget(self.pushButton_13, 2, 3, 1, 1)
        self.pushButton_8 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_8.sizePolicy().hasHeightForWidth())
        self.pushButton_8.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_8.setFont(font)
        self.pushButton_8.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton_8.setObjectName(_fromUtf8("pushButton_8"))
        self.gridLayout.addWidget(self.pushButton_8, 1, 1, 1, 1)
        self.pushButton_4 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_4.sizePolicy().hasHeightForWidth())
        self.pushButton_4.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_4.setFont(font)
        self.pushButton_4.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton_4.setObjectName(_fromUtf8("pushButton_4"))
        self.gridLayout.addWidget(self.pushButton_4, 0, 0, 1, 1)
        self.pushButton_10 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_10.sizePolicy().hasHeightForWidth())
        self.pushButton_10.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_10.setFont(font)
        self.pushButton_10.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton_10.setObjectName(_fromUtf8("pushButton_10"))
        self.gridLayout.addWidget(self.pushButton_10, 1, 3, 1, 1)
        self.pushButton_11 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_11.sizePolicy().hasHeightForWidth())
        self.pushButton_11.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_11.setFont(font)
        self.pushButton_11.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton_11.setObjectName(_fromUtf8("pushButton_11"))
        self.gridLayout.addWidget(self.pushButton_11, 2, 1, 1, 1)
        self.pushButton_14 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_14.sizePolicy().hasHeightForWidth())
        self.pushButton_14.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_14.setFont(font)
        self.pushButton_14.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton_14.setObjectName(_fromUtf8("pushButton_14"))
        self.gridLayout.addWidget(self.pushButton_14, 3, 1, 1, 1)
        self.pushButton_5 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_5.sizePolicy().hasHeightForWidth())
        self.pushButton_5.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_5.setFont(font)
        self.pushButton_5.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton_5.setObjectName(_fromUtf8("pushButton_5"))
        self.gridLayout.addWidget(self.pushButton_5, 3, 0, 1, 1)
        self.pushButton_16 = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton_16.sizePolicy().hasHeightForWidth())
        self.pushButton_16.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_16.setFont(font)
        self.pushButton_16.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton_16.setObjectName(_fromUtf8("pushButton_16"))
        self.gridLayout.addWidget(self.pushButton_16, 3, 3, 1, 1)
        self.pushButton = QtGui.QPushButton(self.centralwidget)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton.sizePolicy().hasHeightForWidth())
        self.pushButton.setSizePolicy(sizePolicy)
        font = QtGui.QFont()
        font.setFamily(_fromUtf8("Modern"))
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton.setFont(font)
        self.pushButton.setStyleSheet(_fromUtf8("background-color: rgb(255, 85, 0);"))
        self.pushButton.setObjectName(_fromUtf8("pushButton"))
        self.gridLayout.addWidget(self.pushButton, 0, 3, 1, 1)
        self.verticalLayout = QtGui.QVBoxLayout()
        self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
        self.label = QtGui.QLabel(self.centralwidget)
        self.label.setStyleSheet(_fromUtf8("plastique"))
        self.label.setObjectName(_fromUtf8("label"))
        self.verticalLayout.addWidget(self.label)
        self.Bank1 = QtGui.QComboBox(self.centralwidget)
        self.Bank1.setStyleSheet(_fromUtf8("background-color: rgb(0, 170, 255);"))
        self.Bank1.setObjectName(_fromUtf8("Bank1"))
        self.verticalLayout.addWidget(self.Bank1)
        self.label_2 = QtGui.QLabel(self.centralwidget)
        self.label_2.setStyleSheet(_fromUtf8("plastique"))
        self.label_2.setObjectName(_fromUtf8("label_2"))
        self.verticalLayout.addWidget(self.label_2)
        self.Bank2 = QtGui.QComboBox(self.centralwidget)
        self.Bank2.setStyleSheet(_fromUtf8("background-color: rgb(0, 170, 255);"))
        self.Bank2.setObjectName(_fromUtf8("Bank2"))
        self.verticalLayout.addWidget(self.Bank2)
        self.label_3 = QtGui.QLabel(self.centralwidget)
        self.label_3.setStyleSheet(_fromUtf8("plastique"))
        self.label_3.setObjectName(_fromUtf8("label_3"))
        self.verticalLayout.addWidget(self.label_3)
        self.Bank3 = QtGui.QComboBox(self.centralwidget)
        self.Bank3.setStyleSheet(_fromUtf8("background-color: rgb(0, 170, 255);"))
        self.Bank3.setObjectName(_fromUtf8("Bank3"))
        self.verticalLayout.addWidget(self.Bank3)
        self.label_4 = QtGui.QLabel(self.centralwidget)
        self.label_4.setStyleSheet(_fromUtf8("plastique"))
        self.label_4.setObjectName(_fromUtf8("label_4"))
        self.verticalLayout.addWidget(self.label_4)
        self.Bank4 = QtGui.QComboBox(self.centralwidget)
        self.Bank4.setStyleSheet(_fromUtf8("background-color: rgb(0, 170, 255);"))
        self.Bank4.setObjectName(_fromUtf8("Bank4"))
        self.verticalLayout.addWidget(self.Bank4)
        self.gridLayout.addLayout(self.verticalLayout, 0, 5, 3, 1)
        spacerItem = QtGui.QSpacerItem(20, 40, QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Expanding)
        self.gridLayout.addItem(spacerItem, 0, 4, 2, 1)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtGui.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 970, 26))
        self.menubar.setObjectName(_fromUtf8("menubar"))
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtGui.QStatusBar(MainWindow)
        self.statusbar.setObjectName(_fromUtf8("statusbar"))
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
        self.pushButton_6.setText(_translate("MainWindow", "Pad5", None))
        self.pushButton_15.setText(_translate("MainWindow", "Pad15", None))
        self.pushButton_12.setText(_translate("MainWindow", "Pad11", None))
        self.pushButton_3.setText(_translate("MainWindow", "Pad2", None))
        self.pushButton_2.setText(_translate("MainWindow", "Pad3", None))
        self.pushButton_7.setText(_translate("MainWindow", "Pad9", None))
        self.pushButton_9.setText(_translate("MainWindow", "Pad7", None))
        self.pushButton_13.setText(_translate("MainWindow", "Pad12", None))
        self.pushButton_8.setText(_translate("MainWindow", "Pad6", None))
        self.pushButton_4.setText(_translate("MainWindow", "Pad1", None))
        self.pushButton_10.setText(_translate("MainWindow", "Pad8", None))
        self.pushButton_11.setText(_translate("MainWindow", "Pad10", None))
        self.pushButton_14.setText(_translate("MainWindow", "Pad14", None))
        self.pushButton_5.setText(_translate("MainWindow", "Pad13", None))
        self.pushButton_16.setText(_translate("MainWindow", "Pad16", None))
        self.pushButton.setText(_translate("MainWindow", "Pad4", None))
        self.label.setText(_translate("MainWindow", "<html><head/><body><p><span style=\" font-size:10pt; font-weight:600;\">BANK ONE</span></p></body></html>", None))
        self.label_2.setText(_translate("MainWindow", "<html><head/><body><p><span style=\" font-size:10pt; font-weight:600;\">BANK TWO</span></p></body></html>", None))
        self.label_3.setText(_translate("MainWindow", "<html><head/><body><p><span style=\" font-size:10pt; font-weight:600;\">BANK THREE</span></p></body></html>", None))
        self.label_4.setText(_translate("MainWindow", "<html><head/><body><p><span style=\" font-size:10pt; font-weight:600;\">BANK FOUR</span></p></body></html>", None))


if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    MainWindow = QtGui.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())
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