Hi Guys,!! Here I come up with another Solution for the problem which I faced recently.
When I run any command for Uploading or Downloading a Google app engine Code from command prompt, Instead of executing the command it just open up the appcfg.py file which is first word of command.
Just do this following Steps:
1. Go to program file where google app engine is installed. Generally It is named as Google.
2. click on appcfg.py and select open with.. Select “Choose Default Programs”.
3. Select Python from programs and select “Always Use the selected program to open this kind of file” .
4. Now run the command you should get the results on command line.