Linking a qtDesigner .ui file to python/pyqt?

So if I go into QtDesigner and build a UI, it'll be saved as a .ui file. How can I make this as a python file or use this in python?

Another way to use .ui in your code is:

from PyQt4 import QtCore, QtGui, uic
class MyWidget(QtGui.QWidget)
    ...
    #somewhere in constructor:
    uic.loadUi('MyWidget.ui', self)

both approaches are good. Do not forget, that if you use Qt resource files (extremely useful) for icons and so on, you must compile it too:

pyrcc4.exe -o ui/images_rc.py ui/images/images.qrc

Note, when uic compiles interface, it adds 'import images_rc' at the end of .py file, so you must compile resources into the file with this name, or rename it in generated code.

Combining Max's answer and Shriramana Sharma's mailing list post, I built a small working example for loading a mywindow.ui file containing a QMainWindow (so just choose to create a Main Window in Qt Designer's File-New dialog).

This is the code that loads it:

import sys
from PyQt4 import QtGui, uic

class MyWindow(QtGui.QMainWindow):
    def __init__(self):
        super(MyWindow, self).__init__()
        uic.loadUi('mywindow.ui', self)
        self.show()

if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)
    window = MyWindow()
    sys.exit(app.exec_())