I'm trying to install python and WFastCGI using IIS web platform installer it fails and give me this error :
Here is the log :
I'm trying to install python and WFastCGI using IIS web platform installer it fails and give me this error :
Here is the log :

As far as I know, we couldn't install the python with fastcgi directly through the platform.
I suggest you could install it by downloading the python installer and using the powershell commnd.
More details, you could refer to below command:
Download and install the python.exe from this url.
Run below command with the powershell.
pip install wfastcgi
More details about how to run python applicaiton on the IIS, you could refer to below article:
https://gist.github.com/dvas0004/3d26c25d614c54ecdf296003d68cddaa