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

>>>importsys>>>fromPyQt5importQtWidgets>>>app=QtWidgets.QApplication(sys.argv)
>>>button=QtWidgets.QPushButton("Hello")
>>>button.setFixedSize(400, 400)
>>>button.show()
>>>app.exec_()

• More information in the Wiki