ModuleNotFoundError: No module named 'django' while running manage.py - django

Question

I have installed virtualenv and then installed django in my Windows 10. After activating virtualenv and running: python manage.py runserver, I am getting:
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:
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?
Also just found while running django-admin.exe I am getting:
Note that only Django core commands are listed as settings are not properly
configured (error: Requested setting INSTALLED_APPS, but settings are not
configured. You must either define the environment variable
DJANGO_SETTINGS_MODULE or call settings.configure() before accessing
settings.).
Manage.py:
#!/usr/bin/env python
"""Django's command-line utility for administrative tasks."""
import os
import sys
def main():
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'wordcount.settings')
try:
from django.core.management import execute_from_command_line
except ImportError as exc:
raise 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?"
) from exc
execute_from_command_line(sys.argv)
if __name__ == '__main__':
main()

Answer 1

You can verify whether you have installed django by creating a python program and importing django
import django
print (django.VERSION)
Above code will print the django version installed , confirm whether you have installed django

Answer 2

You have 2 Python versions : The main one which is installed by default and the one used by virtualenv.
When you run pip install django Django is installed in the main version of Python and thats because the PYTHONPATH environment variable refers to path of the main version and not virtualenv.
The same thing happens when you run python manage.py runserver. It doesn't run python from the virtualenv.
To solve this you need to access pip from the virtualenv and then you can insall Django with it
C:\the\path\to\virtualenv\path\to\pip.exe install django
And just like pip, run python.exe from virtualenv
C:\the\path\to\virtualenv\path\to\python.exe manage.py runserver
If you are using PyCharm for development then you can easily set your venv as interpreter.
Now to run django and just like pip you will access python from virtualenv
1 - File > Settings > Your Project > Python Interpreter
2 - Click the settings icon at the right and then click on Add
3 - Click on Virtualenv Environment and choose the location
Once the virtualenv has been setup you can easily use PyCharm to manage packages