Open-source PyMOL 1.8.x for Windows

Download and Install Python 2.7.17

• Download Python 2.7.17 from https://www.python.org/ftp/python/2.7.17/python-2.7.17.amd64.msi.

NOTE: When installing, check the location where you are installing Python. Usually it is installed in C:\Python27.

PyMOL 1.8.x installation

• Download the latest release from here.
• Unzip the compressed file (pymol-1.8.x-windows-x.x.zip).
• Add PYTHONPATH to your environment variables.

:: PYTHONPATH must be the location of your Python installation. Usually C:\Python27.
setx PYTHONPATH C:\Python27

• Run install-pymol-1.8.x-windows.bat