get_wslpath.py

#!/usr/bin/env python3

from pathlib import (
    PurePosixPath,
    PureWindowsPath,
)

def get_wslpath(winpath):
    purewinpath = PureWindowsPath(winpath)
    winpath_parts = purewinpath.parts

    if winpath_parts[0].endswith(':\\'):
        assert len(winpath_parts[0]) == 3, winpath_parts
        assert winpath_parts[0][0].isalpha(), winpath_parts

        pureposixpath = PurePosixPath('/mnt', winpath_parts[0][0].lower(), *winpath_parts[1:])
    else:
        pureposixpath = PurePosixPath(*winpath_parts)

    wslpath = str(pureposixpath)
    return wslpath

if __name__ == '__main__':
    # example

    winpath = 'C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe'
    wslpath = get_wslpath(winpath)

    print()
    print('winpath:', winpath)
    print('wslpath:', wslpath)

    from subprocess import check_call
    cmd = ['wsl.exe', 'ls', '-la', wslpath]

    print()
    check_call(cmd)