os.system("nvs use 14") Failed to switch version

[NoRainLand]

import os


def main():
    os.system("nvs -v")
    os.system("node -v") # now is 12.22.12
    os.system("nvs use 14") #PATH -= %LOCALAPPDATA%\nvs\default PATH += %LOCALAPPDATA%\nvs\node\14.21.3\x64
    os.system("node -v") # now is still 12.22.12


main()

Failed to switch version

nvs -v :1.7.0
python -v :3.8.5

[jasongin]

Sorry, this kind of out-of-proc use is not supported by nvs.

nvs use modifies PATH environment variable of the shell process that is executing the nvs script. But the python os.system() call creates a new shell process. So environment variable changes made by nvs do not affect the calling python process.

[NoRainLand]

:D
Thank you so much.