Problem downloading source code appengine

Question

When I write the command in cmd:

appcfg.py -A [YOUR_PROJECT_ID] -V [YOUR_VERSION_ID] download_app [OUTPUT_DIR]

Instead of starting to download the source code, it opens the appcfg.py file that is in the directory.

Now I tried to write the same command from powershell, and instead of starting to download the source code, it opened the appcfg.py file and started showing it at the prompt:

[main 2019-03-19T19:12:36.901Z] update#setState idle
[main 2019-03-19T19:13:06.902Z] update#setState checking for updates
[main 2019-03-19T19:13:07.107Z] update#setState idle

Answer 1

Just add python before the command:

python appcfg.py -A [YOUR_PROJECT_ID] -V [YOUR_VERSION_ID] download_app [OUTPUT_DIR]