How to pass arguments to functions by the click of button in PyQt?
You can simply write name = “user” button.clicked.connect(lambda: calluser(name))
pyqt4
Clear all widgets in a layout in pyqt
After a lot of research (and this one took quite time, so I add it here for future reference), this is the way I found to really clear and delete the widgets in a layout: for i in reversed(range(layout.count())): layout.itemAt(i).widget().setParent(None) What the documentation says about the QWidget is that: The new widget is deleted when … Read more
how to have a directory dialog
From inside your QDialog/QWidget class, you should be able to do: file = str(QFileDialog.getExistingDirectory(self, “Select Directory”))
How do I compile a PyQt script (.py) to a single standalone executable file for windows (.exe) and/or linux?
if you want completelly create one stand alone executable, you can try PyInstaller . i feel it’s better to create one stand alone executable than cx_freeze or py2exe (in my experience). and easy to use (full documentation available in the site). It supports Python 3.6 or newer. Pass the –onefile argument if you want to … Read more
PyQt4.QtCore.pyqtSignal object has no attribute ‘connect’
I had the same exact problem as you. Try moving self.parse_triggered = QtCore.pyqtSignal() out of your constructor but inside your class declaration. So instead of it looking like this: class Worker(QtCore.QThread): def __init__(self, parent = None): super(Worker, self).__init__(parent) self.parse_triggered = QtCore.pyqtSignal() It should look like this: class Worker(QtCore.QThread): parse_triggered = QtCore.pyqtSignal() def __init__(self, parent = … Read more
How to embed matplotlib in pyqt – for Dummies
It is not that complicated actually. Relevant Qt widgets are in matplotlib.backends.backend_qt4agg. FigureCanvasQTAgg and NavigationToolbar2QT are usually what you need. These are regular Qt widgets. You treat them as any other widget. Below is a very simple example with a Figure, Navigation and a single button that draws some random data. I’ve added comments to … Read more
Background thread with QThread in PyQt
I created a little example that shows 3 different and simple ways of dealing with threads. I hope it will help you find the right approach to your problem. import sys import time from PyQt5.QtCore import (QCoreApplication, QObject, QRunnable, QThread, QThreadPool, pyqtSignal) # Subclassing QThread # http://qt-project.org/doc/latest/qthread.html class AThread(QThread): def run(self): count = 0 while … Read more
How to install PyQt4 on Windows using pip?
Here are Windows wheel packages built by Chris Golke – Python Windows Binary packages – PyQt In the filenames cp27 means C-python version 2.7, cp35 means python 3.5, etc. Since Qt is a more complicated system with a compiled C++ codebase underlying the python interface it provides you, it can be more complex to build … Read more