Doesn't generate apps.py (polls tutorial)

Hello, I am a beginner.

When I run 

$ python manage.py startapp polls

only apps.py does not exist so I cannot proceed next step.

How can I deal with this problem ?

It would be appreciate if it is explained.

I am looking this page,

https://docs.djangoproject.com/en/1.11/intro/tutorial01/

--
You received this message because you are subscribed to the Google Groups "Django users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscribe@googlegroups.com.
To post to this group, send email to django-users@googlegroups.com.
Visit this group at https://groups.google.com/group/django-users.
To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/b02a8aec-f1a2-4886-8583-0cd6c43ab6ae%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.