Change path to python for Windows os

[tarasfrompir]

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[erogol]

Hey thanks for the PR but why do we assume python for win32?

[tarasfrompir]

Because it is written in the sys module documentation - Windows | 'win32'

https://docs.python.org/3/library/sys.html

[erogol]

@tarasfrompir do you mind signing the CLA for me to merge the PR