8 Replies. The following are 19 code examples for showing how to use PyQt5.QtCore.Signal () . I suspect the auto-completion of your python terminal just doesn't know about the PyQt package you installed. 把Qt5卸载，然后重装了Qt4，出现安装成功语句，然后就可以使用了. ImportError: cannot import name QPyNullVariant It indicates that the SIP API version is not set to version 2. To ensure the successful installation, run the following Python code: import PyQt5. The first try to solve the problem was installing the packages pyqt4-dev-tools and pyqt4.qsci-dev, which did not solve the problem. import qgis The SIP API Version always needs to be set before any other PyQt code is executed. Moreover PyQt provides us the facility to integrate our database in our application. I´ve run brew update twice and brew doctor and it´s says ready to brew. Driver Layer: It have QSqlDriver, QSqlDriverCreatorBase, and QSqlResult . Python. Note that in the project your linked to, there are several connect statements already done. In this tutorial we will teach you how to create a graphical application with PyQT4. Note: Even a non-null icon might not be able to create valid pixmaps, eg. def main(): app = QtGui.QApplication(sys.argv) ex = Example() sys.exit(app.exec_()) python. To use PyQt4, you want to try from PyQt4 import QtCore, QtGui. I am sure there is an easy way, like . Introduction. I'm hesitant to just turn them off, because there might be other unused imports that are actually useful to see. conda create --name pyqt-test python=3 activate pyqt-test conda install pyqt Keep this command prompt open, start the python interpreter, and try the import procedure again. 版权声明：本文为weixin_42620616原创文章，遵循 CC 4.0 BY-SA 版权协议 . from PyQt4.QtCore import * from PyQt4.QtGui import * # etc which still allows me to use QWidget etc unqualified, but at least reminds me which of the 10 libraries I'm using. 1. I'm running on a Mac OS X 10.10.5. The PyQt4 that I have installed is from the wheel (installed with pip). Assuming everything was installed correctly, you need to adjust your imports slightly to port from PyQt4 to PyQt5. Another option would be to do this: Set up failed with this message : Impossible de charger l'extension 'LandSurveyCodesImport' provoque une erreur lors de l'appel à sa méthode classFactory() ImportError: PyQt4 classes cannot be imported in QGIS 3.x. Invite them to answer. Note that in the project your linked to, there are several connect statements already done. Hoping for a workaround for this or something to try. Downgrading pyqt version 5.6.0 to 4.11.4, and qt from version 5.6.0 to 4.8.7 fixes this: $ conda install pyqt=4.11.4 $ conda install qt=4.8.7. based on @eendebakpt 's code, the following workaround works for me on windows/anaconda 4.4.0/python 3.6: import sys from PyQt5 import QtCore , QtGui , QtWidgets from GitAnswer PyQt code cannot run twice je viens de passer de PyQt4 à 5 et J'ai un problème avec QtGui. Create an application object of QApplication class. In the pyinstaller hooks directory there is special handling for PyQt4 though not PySide. Revert to the standalone from 1.83.01 if that was working for you and then just update the app with a patch release (download the zip file for version 1.83.03 and use the tools menu to update to this zip file). PySide2.QtGui.QIcon.name ¶ Return type. I am dynamically creating a QTableView from a Pandas dataframe. I can create the table, with the checkboxes but I cannot get the checkboxes to reflect the model data, or even to change at all to being unchecked. unused import statement import selenium. Since PySide.QtGui.QWidget is a subclass of PySide.QtGui.QPaintDevice, subclasses can be used to display custom content that is composed using a series of painting operations with an instance of the PySide.QtGui.QPainter class. The next thing you did wrong was copying the Python2.7 modules to your Python3.x lib, most modules (especially big complex ones such as PyQt, have version specific code that won't work. Environment Windows 7 64-bit Python 2.7 32-bit PYTHONHOME=c:python27 PYTHONPATH=c:python27lib PYTHONLIB=c:python27libspython27.lib;c:python27libsite-packages. But I agree with the general point that using "import *" is reasonable when you have a large library like PyQt4---providing that library has sensible export behaviour. Hello. Use PyQt5 or the version independent qgis.PyQt import instead. Share. In some linux environments import sip fails. If my import statements are: from PyQt4.QtCore import * from PyQt4.QtGui import * then pylint gives hundreds of "Unused import" warnings. Get the SourceForge newsletter. I've tried debugging by launching python and importing other modules. the tutorial you linked wrote: Running the file does nothing. str. Add QLabel object in it. In Python 2.7 exec was a keyword, meaning it could not be used for variable, function or method names. ewaller wrote: That file is supposed to be gui.py. When starting picard I get the following output and picard won't start. 问题背景:这是我之前的 PyQt 项目，我正在研究并尝试启动 GUI。我已经使用 Python 2.7 设置了一个 Anaconda 环境并使用了 PyQt4。错误是:-File "gui/gui.py", line 26, in <module> from qtpy.QtCore import (Qt, QFileSystemWatcher, QSettings, pyqtSignal) ImportError: cannot import name pyqtSignal 代码 :- Kann QtGui nicht von PyQt4 importieren - import, pyqt4, python-3.6, qtgui Python-Module funktionieren in Imports, aber Befehle von Modulen, die nicht in der Befehlszeile funktionieren - bash, python-2.7, pyqt, python-modul A QWidget object creates top level window. cannot import name 'QtGui'. I also install pip install PyQT5 and it not helped. from PyQt4 import QtCore, QtGui RuntimeError: the sip module implements API v11.0 but the PyQt4.QtCore module requires API v10.1 [[email protected] python_programme]$ python2 erstenprog.py Traceback (most recent call last): File "erstenprog.py", line 26, in <module> import matplotlib.pyplot as plt ImportError: No module named matplotlib.pyplot je viens de passer de PyQt4 à 5 et J'ai un problème avec QtGui. puis j'ai essayé de changer le système.chemin selon Pyinstaller: importateur: ne peut pas importer nom QtGui travailler autour, mais il me donne . If no errors appeared, that means you have successfully installed PyQt5, but if you got errors, you might be using an unsupported version of Python. If it works now, it means the problem is the pip version of PyQt5. Which I couldn't run without errors. コードをPyQt4からPyQt5に変換しようとしていますが、エラーが発生します。 from PyQt5.QtGui import QApplication, QPixmap desktop = QApplication.desktop() QPixmap.grabWindow(desktop.screen().winId()).save("screen.png", "PNG") 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:44:40) [MSC v.1600 64 bit (AMD64)] Traceback (most recent call last): File "C:\Python34\Projects\name . I have example code here. unused import statement import selenium. Qt provides four classes for handling image data: QImage, QPixmap, QBitmap and QPicture. from PyQt5 import Qtcore Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: cannot import name 'Qtcore' >>> Copy Code from PyQt5.QtWidgets import QApplication, QWidget Traceback (most recent call last): File "<stdin>", line 1, in <module> SystemError: initialization of QtWidgets failed without raising an exception To link SQL database with PyQt5 application QtSql module is used.The SQL classes are divided n three layers: 1. I want the checkbox checkbox_name to lock the name-choice, without copy and pasting the current lock_choice()-method and switching the hardcoded combobox. 结果如下：. Get notifications on updates for this project. refs to: [https://github.com/qgis/QGIS/issues/45169](https://github.com/qgis/QGIS/issues/45169) ``` root@106cc5a953e7 . File " C: \P rogramData \A naconda3 \l ib \s ite-packages \p yqtgraph \Q t.py ", line 137, in < module > from PyQt5 import QtGui, QtCore, QtWidgets, sip, uic ImportError: cannot import name ' sip ' from ' PyQt5 ' (C:\ProgramData\Anaconda3\lib\site-packages\PyQt5 . QImage is designed and optimized for I/O, and for direct pixel access and manipulation, while QPixmap is designed and optimized for showing images on screen. We can integrate any database through it some of them are- MySQL, SQLITE etc. from PyQt4 import QtGui, QtCore, QtWebKit I receive the following: Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: cannot import name QtWebKit J'ai installé en utilisant l'installateur windows 32bit, pas ma propre construction. ImportError: cannot import name QtGui then I tried to change the sys.path according to Pyinstaller: ImportError: cannot import name QtGui work around but it still gives me the same Update: It looks like I do in fact import QtGui because when I go in IDLE and try it, it still autocompletes QMovie and a whole bunch of other attributes. PyQt 4 Creating a simple GUI application using PyQt involves the following steps: Import QtCore, QtGui and QtWidgets modules from PyQt5 package. from PyQt4 import QtGui. from qgis.PyQt.Qt import QTextDocument from qgis.PyQt.QtGui import QFont mQFont = "Sans Serif" mQFontsize = 9 mLabelQString = "© QGIS 2019" mMarginHorizontal = 0 mMarginVertical = 0 mLabelQColor = "#FF0000" INCHES_TO_MM . PyQt5 à défaut d'importation de QtGui. With PyQt/PySide: source_object.name_of_signal.connect(target_object.name_of_slot) Replace source_object and target_object with suitable objects in your code. mapLayersByName ("layer name you . Know somebody who can help? Package: picard Version: 0.11-2 Severity: grave Justification: renders package unusable. In the same command prompt, do the following: puis j'ai essayé de changer le système.chemin selon Pyinstaller: importateur: ne peut pas importer nom QtGui travailler autour, mais il me donne . Create a new file called gui.py. I started learning PyQt from zetcode, as far as i know sys.argv reads in the parameter from coomandline and first being the name of file itself, so if sys.argv is a list then what being passed to QtGui.QApplication () in. Both QComboBoxes can share the method use_choice() right now, but they cannot share the method lock_choice(), as both checkboxes lock the color-choice. Find layer by name. from PyQt4 import QtGui, QtCore, QtWebKit, QtNetwork ImportError: cannot import name QtWebKit ` jeremie Member (629) 1 4 6 11/02/2016 0 votes 2 answers 1552 views ANSWER: × Invite people to answer. It is possible to import the FreeCAD module into a Python application, and use all its tools from the host application, but the graphical user interface (GUI) can be imported as a Python module as well. ImportError: cannot import name QtGui. Using pip. ImportError: cannot import name QtGui. Copy link chronopoulos commented Sep 27, 2019 . I'm using ubuntu 12.04 and was able to get PyQt4 installed by doing: sudo apt-get install python-qt4. instance (). I'm attempting to follow these tutorials and am stuck on this part. The main GUI elements are in the QtWidgets module, whilst the more basic GUI elements are in QtGui. Subject: picard: Does not start (ImportError: cannot import name QtGui) Date: Thu, 09 Apr 2009 16:10:12 +0200 Package: picard Version: 0.11-2 Severity: grave Justification: renders package unusable When starting picard I get the following output and picard won't start. Thank you for your help and [solved] is this problem. I try to run a python script using PyQt5 QtWebEngineWidgets but it throws errors: from PyQt5.QtWebEngineWidgets import ( ImportError: No module named 'PyQt5.QtWebEngineWidgets' I think there is a This way the depencies stay the same but you get the latest psychopy code. Related course: Create GUI Apps with PyQt5 ; PyQt4 installation PyQt does not include Qt itself - you may have to obtain it separately. fail to run uber_subject.py- fail to import PyQt4.QtGui: Jinxia Yao: August 27, 2017 12:22PM: Re: fail to run uber_subject.py- fail to import PyQt4.QtGui: rick reynolds: August 27, 2017 09:02PM: Re: fail to run uber_subject.py- fail to import PyQt4.QtGui: Ekarin Pongpipat: September 15, 2017 10:24PM: Re: fail to run uber_subject.py- fail to . 技术标签： Pyqt. Driver Layer: It have QSqlDriver, QSqlDriverCreatorBase, and QSqlResult . make and make install for PyQT5, sip work without errors but spyder still complain that PyQT not instaled. ImportError: cannot import name 'sip' from 'PyQt5' エラーメッセージ. Get newsletters and notices that include site news, special offers and exclusive discounts about IT products & services. In a sense, this is true. Re: ImportError: cannot import name 'Ui_Dialog' [SOLVED] Exactly brillant! I hope it can give you a reference, and I hope you can support developepaer more. exec() or exec_() The .exec() method is used in Qt to start the event loop of your QApplication or dialog boxes. We can integrate any database through it some of them are- MySQL, SQLITE etc. To link SQL database with PyQt5 application QtSql module is used.The SQL classes are divided n three layers: 1. See the Qt modules page for more details. The display effect is as follows (Note: different contents can be displayed every four seconds, which can be set in the program): The above example of PyQt4 real-time display text content GUI is all the content shared by Xiaobian. also when I run python and the run "import PyQT5" it complain: ImportError: No module named PyQT5. Can anyone help me figure out why QtTest is different? This code runs fine: from PyQt4 import QtCore, QtGui, uic But this one doesn't: from PyQt4 import QtCore, QtGui, uic, QtSql This is the error: 'from PyQt4 import QtCore, QtGui, uic, QtSql ImportError: DLL load failed: The specified procedure could not be found.' 更新：看起来我确实导入了QtGui，因为当我进入IDLE并尝试它时，它仍然自动完成QMovie和一大堆 . PyQt4 has a wide range of various widgets, including buttons, check boxes, sliders, or list boxes. Bug#523347: picard: Does not start (ImportError: cannot import name QtGui) Patrick Hallen Thu, 09 Apr 2009 07:13:25 -0700. if the file does not exist or cannot be read. def gui_fname(dir=None): """ Select a file via a dialog and return the file name. Therefore, if you installed pyqt 5.x for Anaconda but found both of PyQt4 and PyQt5 in Anaconda3\Lib\site-packages, you should delete the folder PyQt4 and leave PyQt5 alone. I did put the code into gui.py and that finally resolve my problem. PyQt - Column of Checkboxes in a QTableView. PyQt's UI compiler features an -x flag which can be used to build an executable demo from a UI file. Normally you can only import the complete interface as a whole, not pieces of it; this is because the FreeCAD interface system is not only made of independent widgets and toolbars . Getting PyQt4 working. The code I am trying to run is: from PyQt4 import QtGui, QtCore) works without any issues, but when i run . Moreover PyQt provides us the facility to integrate our database in our application. When you write standalone python scripts, make sure that the very first import is. Introduction. I discovered that if I changed the PyQt4 for PySide like this. With PyQt/PySide: source_object.name_of_signal.connect(target_object.name_of_slot) Replace source_object and target_object with suitable objects in your code. J'ai installé en utilisant l'installateur windows 32bit, pas ma propre construction. 报出以下错误 "cannot import name 'QtGui'". 2. from qgis.core import QgsProject layer = QgsProject. This approach contrasts with the canvas-style approach used by the Graphics View Framework where items are added to a scene by the application and are rendered by the . I can import PyQt5, but then I cannot use the modules under it. These examples are extracted from open source projects. Detailed Description¶. In my tutorial on Python GUI's with PyQt, I had many people bring up the fact that when modifying the GUI, as soon as pyuic5 is executed again to rebuild the Python file, all original changes will be lost.. """ try: from PyQt5.QtWidgets import QApplication, QFileDialog except ImportError: try: from PyQt4.QtGui import QApplication, QFileDialog except ImportError: from PySide.QtGui import QApplication, QFileDialog if dir is None: dir = './' app = QApplication([dir]) fname = QFileDialog.getOpenFileName(None, "Select a . I will show just the first lines. QGIS 2.8.3. import os, sys, FreeCAD, FreeCADGui from PyQt4 import QtCore, QtGui from PyQt4.QtGui import QMainWindow, QWorkspace, QAction, QFileDialog, QApplication from pivy.coin import SoInput, SoDB, sogui. I try to run Spyder on python 2 therefore I needed to build PyQT. >>> from PyQt5 import QtCore Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: PyCapsule_GetPointer called with incorrect name. ImportError: cannot import name QtGui. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. Slightly different version, but it works for me: In [1]: from PyQt4.QtCore import QT_VERSION_STR In [2]: print("Qt version:", QT_VERSION_STR) ('Qt version:', '4.8.5') Re: [cx-freeze-users] ImportError: cannot import name format with python 3.2, numpy 1.6.0, cx_freeze 4.2.3 然后我尝试根据Pyinstaller更改sys.path：ImportError：无法导入名称QtGui工作但它仍然给我相同. I've just built PyQt5 in a pyenv virtualenv with python 3.6.3 on OpenSUSE leap, the build went fine, but when I import. from PyQt4.QtCore import * from PyQt4.QtGui import * from PyQt4 import QtCore, QtGui, QtTest When I run my unit test from the command line I get the error: ImportError: cannot import name QtTest QtCore and QtGui appear to load just fine. This isn't available in PySide's version. I get the above error when running a simple .py file: import sys from PyQt4 import QtGui. The example code needs to be changed to something like: Never copy modules from one release to another unless you are sure that it is version agnostic. Traceback (most recent call last): File "F NinjaEdit/ui.pyw", line 2, in <module> from PyQt4 import QtCore as core, QtGui as gui, uic ImportError: cannot import name 'uic'can you tell me whats wrong Note (I use 3.4.3)found the problem should be Mar-28-2019, 12:49 PM. The qgis import takes care of that. PyQt5.QtCore.Signal () Examples. 3 Contributors. Depending on the way the icon was created, it may have an associated name. To install PyQt5 using pip, run the following command: $ pip3 install PyQt5. QBitmap is only a convenience class that inherits QPixmap, ensuring a depth of 1.The isQBitmap() function returns true if a . Set the caption of label as "hello world". . 今天初次使用PyQt，运行以下语句. January 18, 2022 . 1. For demonstration proposes, I had put all code into the Python file generated, but a smarter way to add code would be have been to import the . Returns the name used to create the icon, if available. Created by: XRolland Hi, I just tried to setup your plugin in QGIS 3.10.4 on Ubuntu 18.04. Therefore, if you installed pyqt 5.x for Anaconda but found both of PyQt4 and PyQt5 in Anaconda3\Lib\site-packages, you should delete the folder PyQt4 and leave PyQt5 alone. 2 comments Comments. So I tried to install the package python-qt4, which happened to be already installed in my system. Python . They all work fine (e.g. This code runs fine: from PyQt4 import QtCore, QtGui, uic But this one doesn't: from PyQt4 import QtCore, QtGui, uic, QtSql This is the error: 'from PyQt4 import QtCore, QtGui, uic, QtSql ImportError: DLL load failed: The specified procedure could not be found.' pyqt_fit appears to be a completely separate package, not maintained by the PyQt developers. Steps 1. from PyQt4.QtGui import * and it did not work. Traceback (most recent call last): File "train.py", line 15, in < module > from torch.cuda import amp ImportError: cannot import name 'amp' 原因分析： 1.只有PyTorch1.6版本以上才可以从torch.cuda中import amp； Downgrading pyqt version 5.6.0 to 4.11.4, and qt from version 5.6.0 to 4.8.7 fixes this: $ conda install pyqt=4.11.4 $ conda install qt=4.8.7. The PyQt4 that I have installed is from the wheel (installed with pip). In this section of the tutorial, we will describe several useful widgets: a QtGui.QCheckBox, a ToggleButton, a QtGui.QSlider, a QtGui.QProgressBar, and a QtGui.QCalendarWidget. This will work on any platform that supports PyQT4 including Windows, Linux, UNIX, Android, OS X and iOS. I'm using PyQt and am running into this issue. PyQt5 à défaut d'importation de QtGui. Code: Select all.
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