I want to use qt with python.
"import qt" return me :"ImportError: No module named qt". I already instaled pyqt.
what I hve to install in order to activate "import qt"
Thank You
The current PyQt comes in the PyQt4 package, which has several modules. You almost always need to start with:
from PyQt4 import QtCore
from PyQt4 import QtGui
Add other imports as necessary if you need additional sub-modules of PyQt (like QtNetwork, QtSql etc).
Tip for the future: find the lib/site-packages library of your Python installation and look at the packages in there if you're not sure about the name after installing.
Also, arm yourself with a PyQt tutorial - any decent one covers this in the first few paragraphs.
import PyQt4 works for me fine.
Related
I have been using the QT designer tool which saves GUIs as a XML template. PySide2 is able to covert this to a Python Class file.
Utilizing the tool for an XML that includes QWebEngineView
pyside2-uic GUI_NEW.ui > ui_main.py
The first few lines of the ui_main.py call for
################################################################################
## Created by: Qt User Interface Compiler version 5.15.2
##
## WARNING! All changes made in this file will be lost when recompiling UI file!
################################################################################
from PySide2.QtCore import *
from PySide2.QtGui import *
from PySide2.QtWidgets import *
from QWebEngineView import QWebEngineView
running the file that utilizes this, results in:
ModuleNotFoundError: No module named 'QWebEngineView'
So far I have tried
Trying PySide6 over PySide 2
Replaced the import line with
from PySide2.QtWebEngineWidgets import QWebEngineView
The Application runs but completely hangs
pip install PyQtWebEngine
pip install PyQt5==5.11.3
Cleaning up, installing all references to Qt (Pyside, PyQT, etc), and re-installing
Attempted all the above on python 3.6 - 3.8
Here is another option, you don't have it.
Then try this option:
from PyQt5 import QtWebEngineWidgets
That is, an example of a string:
self.webView = QtWebEngineWidgets.QWebEngineView(self.centralwidget)
But, unfortunately Qt, PyQt and PySide should never be used together. Most problems occur when trying to re-display a widget created with a binding with another one created with a different binding.
The solution is simple: you either use PyQt5 and use QtWebEngineWidgets, or PySide2.
As a last resort, try installing a newer version (5.12)(PyQt5) and install PyQtWebEngine separately.
Ultimately I stuck to PySide2 (option 2), creating a new project specific python environment that did not involve PyQt5. This prevented the application from hanging with zero console errors.
I am trying to use PyQt4 in pycharm. My code works perfectly in run mode, but in debug mode, when I try to import PyQt4 I get the following error:
"RuntimeError: the PyQt4.QtCore and PyQt5.QtCore modules both wrap the QObject class"
This happens even w/ very barebones code:
from PyQt4 import QtGui, QtCore
print('cheese')
(thus, this is different from previous PyQt4 Pycharm problems w. Matplotlib)
Clearly, the PyCharm debugger is using PyQt5 (this can be seen by calling sys.modules['PyQt5']). How can I 'un-import' PyQt5, or at least prevent the collision?
Also: I tried importing differently to include explicit dependencies, but this also gives error:
import PyQt4 as pp
pp.QtGui
AttributeError: module 'PyQt4' has no attribute 'QtGui'
Thanks!
you can go to Settings>Build,Execution,Deployment>Debugger>Python Debugger>PyQt compatible:
Select PyQt4.
Try going to File > Settings > Project > Project Interpreter. Edit your current interpreter, or create a new one, and remove PyQt5 from the list that shows up.
I'm introducing myself to PyQt5 through one of its included examples. On this windows 7 machine, I have installed Python 3.4 x64, and PyQt5 using its binary provided on riverbankcomputiong.com. The documentation says that the binary already includes everything necessary to run. I (perhaps incorrectly) assumed that i can safely skip the "configure" and "build" steps at Riverbank's installation guide, since the guide only talks about .zip, .tar, etc. files.
I used the tutorial located here:
http://www.pythonschool.net/pyqt/introduction-to-pyqt/
Which also says "just run the binary to install pyqt4 there is no step three."
When i attempt to run any tutorial containing reference to PyQt4 or PyQt5:
from PyQt5.QtCore import *
I get the following error message:
ImportError: DLL load failed: The specified module could not be found.
But when i enter the following:
import PyQt5
The interpreter seems to be okay with it -- no errors.
I can't help but think I've done something wrong installation, because even when I run the examples included with PyQt4/PyQt5, i get importerrors. It seems as though QtCore doesn't even exist in relation to PyQt4 or PyQt5. What's going on here?
There seem to be a few possibilities:
You might need to update your PATH environment variable to include the location where the library is installed (i.e. directory location where the DLLs are)
Take note of where you're launching the interpreter or scripts from as their current path may not necessarily include what you expect.
You can check this with:
>>> import os
>>> os.environ['PATH'].split(os.pathsep)
Make sure the installation process was truly successful (i.e. zero errors) and that you downloaded the correct binary package for your PC's architecture.
I ran into a similar issue with PySide where import PySide would work but import PySide.QtCore would fail.
I'd expect the code to work after verifying those things:
>>> from PyQt5.QtCore import *
>>>
If it doesn't, update the question with additional details like things you checked, their values, error messages, etc.
I am new to python and I have an issue running PyQT5 for my Python 3.3 on PyCharm.
I have read several posts about it, some speaking about doing a build which I am not sure to get.
Here is what I have done :
Downloaded and run the .exe found here.
Installing normally, the same way as my Pillow for instance (which is running with my Pycharm).
aaaand, that's its.
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
== from PyQt5.QtCore import *
ImportError: No module named 'PyQt5.QtCore'
When I setup the module in PyCharm it simply didn't find it. So is the .exe found on the official PyQT5 dead ?
Thanks
Bloby
I also met the same problem recently, maybe you also install PyQt5 by pip？
It seems that the after using pip, I can import the PyQt5 but not any packages of it, so I have to download the old version with an installer.
Then Pycharm can runs without error.
Well I am new to Qt and found its easier to work with python , I dont know how far its true .
but some of the code snippets have
import qt
and some have
import PyQt4
I don't know what the difference is, when I tried to interchange them I did get some errors , like some function was not recognizable and so on, also I am trying to build front end GUI for my application, which GUI framework would u suggest ? Is there anything close to VB like environment ?
Old PyQt3 use qt
import qt
Current PyQt4 use PyQt4
import PyQt4
If you use PySide, use PySide
import PySide