Unofficial PyQt5 via PyPI for Python 2.7 64-bit on Windows

A) Install with pip and git

With this approach, you get version 5.7.1

$ pip install git+git://github.com/pyqt/python-qt5.git

B) Or install with just pip

With this approach, you only get 5.3 due to space restrictions on PyPI.

$ pip install python-qt5

C) Or install with just git

• See wiki.

Testing out the installation

1. Launch Python
2. Type this in

>>> import sys
>>> from PyQt5 import QtWidgets
>>> app = QtWidgets.QApplication(sys.argv)
>>> button = QtWidgets.QPushButton("Hello")
>>> button.setFixedSize(400, 400)
>>> button.show()
>>> app.exec_()

• More information in the Wiki