Posts: 6
Threads: 2
Joined: Feb 2019
I try to run Spyder on python 2 therefore I needed to build PyQT.
make and make install for PyQT5, sip work without errors but spyder still complain that PyQT not instaled
also when I run python and the run "import PyQT5" it complain: ImportError: No module named PyQT5
I also install pip install PyQT5 and it not helped.
Thanks
Posts: 1,032
Threads: 16
Joined: Dec 2016
Please show your code, how do you import PyQt5? (not PyQT5)
for example
from PyQt5.QtWidgets import (QWidget, QLabel, QComboBox, QPushButton,
QHBoxLayout, QVBoxLayout,
QPlainTextEdit, QApplication, QSlider)
from PyQt5.QtGui import (QIcon, QCursor)
Posts: 6
Threads: 2
Joined: Feb 2019
Import PyQt5 works but:
Output: $ python
Python 2.7.15+ (default, Oct 2 2018, 22:12:08)
[GCC 8.2.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import PyQt5
>>> from PyQt5.QtWidgets import (QWidget, QLabel, QComboBox, QPushButton,
... QHBoxLayout, QVBoxLayout,
... QPlainTextEdit, QApplication, QSlider)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named sip
>>> from PyQt5.QtGui import (QIcon, QCursor)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named sip
>>> import sip
>>> from PyQt5.QtWidgets import (QWidget, QLabel, QComboBox, QPushButton,
... QHBoxLayout, QVBoxLayout,
... QPlainTextEdit, QApplication, QSlider)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: cannot import name QWidget
>>> from PyQt5.QtGui import (QIcon, QCursor)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: cannot import name QIcon
>>> import QIcon
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named QIcon
Posts: 1,032
Threads: 16
Joined: Dec 2016
Maybe there are still many mistakes in the code or in your PyQt5 Installation?
here'e a simple PyQt5 example, does this work for you?
#!/usr/bin/python3
# -*- coding: utf-8 -*-
#############################################################################
from PyQt5.QtCore import (QFile, QFileInfo, QPoint, QRect, QSettings, QSize,
Qt, QTextStream)
from PyQt5.QtGui import QIcon, QKeySequence
from PyQt5.QtWidgets import (QAction, QApplication, QFileDialog, QMainWindow,
QMessageBox, QTextEdit)
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
self.curFile = ''
self.textEdit = QTextEdit()
self.setCentralWidget(self.textEdit)
self.createActions()
self.createMenus()
self.createToolBars()
self.createStatusBar()
self.readSettings()
self.textEdit.document().contentsChanged.connect(self.documentWasModified)
self.setCurrentFile('')
def closeEvent(self, event):
if self.maybeSave():
self.writeSettings()
event.accept()
else:
event.ignore()
def newFile(self):
if self.maybeSave():
self.textEdit.clear()
self.setCurrentFile('')
def open(self):
if self.maybeSave():
fileName, _ = QFileDialog.getOpenFileName(self)
if fileName:
self.loadFile(fileName)
def save(self):
if self.curFile:
return self.saveFile(self.curFile)
return self.saveAs()
def saveAs(self):
fileName, _ = QFileDialog.getSaveFileName(self)
if fileName:
return self.saveFile(fileName)
return False
def about(self):
QMessageBox.about(self, "About Application",
"The <b>Application</b> example demonstrates how to write "
"modern GUI applications using Qt, with a menu bar, "
"toolbars, and a status bar.")
def documentWasModified(self):
self.setWindowModified(self.textEdit.document().isModified())
def createActions(self):
root = QFileInfo(__file__).absolutePath()
self.newAct = QAction(QIcon.fromTheme('gtk-new'), "&New", self,
shortcut=QKeySequence.New, statusTip="Create a new file",
triggered=self.newFile)
self.openAct = QAction(QIcon.fromTheme('gtk-open'), "&Open...",
self, shortcut=QKeySequence.Open,
statusTip="Open an existing file", triggered=self.open)
self.saveAct = QAction(QIcon.fromTheme('gtk-save'), "&Save", self,
shortcut=QKeySequence.Save,
statusTip="Save the document to disk", triggered=self.save)
self.saveAsAct = QAction(QIcon.fromTheme('gtk-save-as'),"Save &As...", self,
shortcut=QKeySequence.SaveAs,
statusTip="Save the document under a new name",
triggered=self.saveAs)
self.exitAct = QAction(QIcon.fromTheme('application-exit'),"E&xit", self, shortcut="Ctrl+Q",
statusTip="Exit the application", triggered=self.close)
self.cutAct = QAction(QIcon.fromTheme('edit-cut'), "Cu&t", self,
shortcut=QKeySequence.Cut,
statusTip="Cut the current selection's contents to the clipboard",
triggered=self.textEdit.cut)
self.copyAct = QAction(QIcon.fromTheme('edit-copy'), "&Copy", self,
shortcut=QKeySequence.Copy,
statusTip="Copy the current selection's contents to the clipboard",
triggered=self.textEdit.copy)
self.pasteAct = QAction(QIcon.fromTheme('edit-paste'), "&Paste",
self, shortcut=QKeySequence.Paste,
statusTip="Paste the clipboard's contents into the current selection",
triggered=self.textEdit.paste)
self.aboutAct = QAction(QIcon.fromTheme('help-info'),"&About", self,
statusTip="Show the application's About box",
triggered=self.about)
self.aboutQtAct = QAction(QIcon.fromTheme('help-about'),"About &Qt", self,
statusTip="Show the Qt library's About box",
triggered=QApplication.instance().aboutQt)
self.cutAct.setEnabled(False)
self.copyAct.setEnabled(False)
self.textEdit.copyAvailable.connect(self.cutAct.setEnabled)
self.textEdit.copyAvailable.connect(self.copyAct.setEnabled)
def createMenus(self):
self.fileMenu = self.menuBar().addMenu("&File")
self.fileMenu.addAction(self.newAct)
self.fileMenu.addAction(self.openAct)
self.fileMenu.addAction(self.saveAct)
self.fileMenu.addAction(self.saveAsAct)
self.fileMenu.addSeparator();
self.fileMenu.addAction(self.exitAct)
self.editMenu = self.menuBar().addMenu("&Edit")
self.editMenu.addAction(self.cutAct)
self.editMenu.addAction(self.copyAct)
self.editMenu.addAction(self.pasteAct)
self.menuBar().addSeparator()
self.helpMenu = self.menuBar().addMenu("&Help")
self.helpMenu.addAction(self.aboutAct)
self.helpMenu.addAction(self.aboutQtAct)
def createToolBars(self):
self.fileToolBar = self.addToolBar("File")
self.fileToolBar.addAction(self.newAct)
self.fileToolBar.addAction(self.openAct)
self.fileToolBar.addAction(self.saveAct)
self.editToolBar = self.addToolBar("Edit")
self.editToolBar.addAction(self.cutAct)
self.editToolBar.addAction(self.copyAct)
self.editToolBar.addAction(self.pasteAct)
def createStatusBar(self):
self.statusBar().showMessage("Ready")
def readSettings(self):
settings = QSettings("Trolltech", "Application Example")
pos = settings.value("pos", QPoint(200, 200))
size = settings.value("size", QSize(400, 400))
self.resize(size)
self.move(pos)
def writeSettings(self):
settings = QSettings("Trolltech", "Application Example")
settings.setValue("pos", self.pos())
settings.setValue("size", self.size())
def maybeSave(self):
if self.textEdit.document().isModified():
ret = QMessageBox.warning(self, "Application",
"The document has been modified.\nDo you want to save "
"your changes?",
QMessageBox.Save | QMessageBox.Discard | QMessageBox.Cancel)
if ret == QMessageBox.Save:
return self.save()
if ret == QMessageBox.Cancel:
return False
return True
def loadFile(self, fileName):
file = QFile(fileName)
if not file.open(QFile.ReadOnly | QFile.Text):
QMessageBox.warning(self, "Application",
"Cannot read file %s:\n%s." % (fileName, file.errorString()))
return
inf = QTextStream(file)
QApplication.setOverrideCursor(Qt.WaitCursor)
self.textEdit.setPlainText(inf.readAll())
QApplication.restoreOverrideCursor()
self.setCurrentFile(fileName)
self.statusBar().showMessage("File loaded", 2000)
def saveFile(self, fileName):
file = QFile(fileName)
if not file.open(QFile.WriteOnly | QFile.Text):
QMessageBox.warning(self, "Application",
"Cannot write file %s:\n%s." % (fileName, file.errorString()))
return False
outf = QTextStream(file)
QApplication.setOverrideCursor(Qt.WaitCursor)
outf << self.textEdit.toPlainText()
QApplication.restoreOverrideCursor()
self.setCurrentFile(fileName);
self.statusBar().showMessage("File saved", 2000)
return True
def setCurrentFile(self, fileName):
self.curFile = fileName
self.textEdit.document().setModified(False)
self.setWindowModified(False)
if self.curFile:
shownName = self.strippedName(self.curFile)
else:
shownName = 'untitled.txt'
self.setWindowTitle("%s[*] - Application" % shownName)
def strippedName(self, fullFileName):
return QFileInfo(fullFileName).fileName()
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
mainWin = MainWindow()
mainWin.show()
sys.exit(app.exec_())
Posts: 6
Threads: 2
Joined: Feb 2019
running the example code result:
Output: $ python testqt.py
Traceback (most recent call last):
File "testqt.py", line 5, in <module>
from PyQt5.QtCore import (QFile, QFileInfo, QPoint, QRect, QSettings, QSize,
ImportError: No module named sip
I added import sip in the code:
#!/usr/bin/python3
# -*- coding: utf-8 -*-
#############################################################################
import sip
from PyQt5.QtCore import (QFile, QFileInfo, QPoint, QRect, QSettings, QSize,
Qt, QTextStream)
from PyQt5.QtGui import QIcon, QKeySequence
from PyQt5.QtWidgets import (QAction, QApplication, QFileDialog, QMainWindow,
QMessageBox, QTextEdit)But got the same error.
I install PySide2 with pip and run its example test:
import sys
from PySide2.QtWidgets import QApplication, QLabel
if __name__ == "__main__":
app = QApplication(sys.argv)
label = QLabel("Hello World")
label.show()
sys.exit(app.exec_())and It works and window with Hello World appear.
Spyder still failed.
I run it with pdb:
Output: python -m pdb /home/osboxes/.virtualenvs/myenv_env/bin/spyder
> /home/osboxes/.virtualenvs/myenv_env/bin/spyder(4)<module>()
-> import re
(Pdb) break /home/osboxes/.virtualenvs/myenv_env/local/lib/python2.7/site-packages/qtpy/__init__.py:155
Breakpoint 1 at /home/osboxes/.virtualenvs/myenv_env/local/lib/python2.7/site-packages/qtpy/__init__.py:155
(Pdb) c
> /home/osboxes/.virtualenvs/myenv_env/local/lib/python2.7/site-packages/qtpy/__init__.py(155)<module>()
-> from PySide2 import __version__ as PYSIDE_VERSION # analysis:ignore
(Pdb) n
> /home/osboxes/.virtualenvs/myenv_env/local/lib/python2.7/site-packages/qtpy/__init__.py(156)<module>()
-> from PySide2.QtCore import __version__ as QT_VERSION # analysis:ignore
(Pdb) n
ImportError: "/usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5.12' not found (required by /home/osboxes/.virtualenvs/myenv_env/local/lib/python2.7/site-packages/PySide2/QtCore.so)"
> /home/osboxes/.virtualenvs/myenv_env/local/lib/python2.7/site-packages/qtpy/__init__.py(156)<module>()
-> from PySide2.QtCore import __version__ as QT_VERSION # analysis:ignore
But when I run from a test file or interactive python the following code, it not return an error:
from PySide2 import __version__ as PYSIDE_VERSION # analysis:ignore
from PySide2.QtCore import __version__ as QT_VERSION # analysis:ignore
Posts: 1,032
Threads: 16
Joined: Dec 2016
(Mar-28-2019, 12:49 PM)nadavvin Wrote: I also install pip install PyQT5 and it not helped.
I think pip installs PyQt5 for python3.
Posts: 6
Threads: 2
Joined: Feb 2019
Mar-28-2019, 05:37 PM
(This post was last modified: Mar-28-2019, 05:38 PM by nadavvin.)
But I install with python2:
Output: $ pip install PyQt5
Requirement already satisfied: PyQt5 in /home/osboxes/.virtualenvs/myenv_env/lib/python2.7/site-packages (5.12.1)
Posts: 1,032
Threads: 16
Joined: Dec 2016
maybe you can try for python 2
sudo apt install python-pyqt5
|
