G:\Django項目\django_introduction>python manage.py runserver

Traceback (most recent call last):

? File "manage.py", line 10, in main

? ? from django.core.management import execute_from_command_line

ModuleNotFoundError: No module named 'django'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):

? File "manage.py", line 21, in <module>

? ? main()

? File "manage.py", line 16, in main

? ? ) from exc

ImportError: Couldn't import Django. Are you sure it's installed and available on your PYTHONPATH environment variable? Did you forget

?to activate a virtual environment?

?

已經安裝django了? 總是報錯? 怎么破啊