can't create django project using Windows command prompt!

I would like to start web designing using django! but Whenever i type "django-admin.py startproject mySite" in cmd this code popup through notepad, Then what should I do?

#!c:\users\crepin\envs\myproject\scripts\python.exe

from django.core import management

if __name__ == "__main__":

    management.execute_from_command_line()

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