title: ModuleNotFoundError: No module named 'win32api' right after I install channels
body: <p>I am buidling a chat app with WebSockets and django channels.
  I run 'pip install channels' it gets installed successfully. Then I install 'asgi_redis'. That too gets installed. Now when I try to import channels.asgi it gives me error. Also suddenly my manage.py shell stops working. In other django projects it works fine.</p>
  
  <p>Error when I try to access shell:</p>
  
  <pre><code>C:\Users\gdhameeja\Desktop\chatapp\chat&gt;manage.py shell
  Traceback (most recent call last):
    File "C:\Users\gdhameeja\Desktop\chatapp\chat\manage.py", line 22, in &lt;module&gt;
      execute_from_command_line(sys.argv)
    File "C:\Users\gdhameeja\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.6-py3.6.egg\django\core\management\__init__.py", line 364, in execute_from_command_line
      utility.execute()
    File "C:\Users\gdhameeja\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.6-py3.6.egg\django\core\management\__init__.py", line 338, in execute
      django.setup()
    File "C:\Users\gdhameeja\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.6-py3.6.egg\django\__init__.py", line 27, in setup
      apps.populate(settings.INSTALLED_APPS)
    File "C:\Users\gdhameeja\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.6-py3.6.egg\django\apps\registry.py", line 116, in populate
      app_config.ready()
    File "C:\Users\gdhameeja\AppData\Local\Programs\Python\Python36\lib\site-packages\channels\apps.py", line 17, in ready
      monkeypatch_django()
    File "C:\Users\gdhameeja\AppData\Local\Programs\Python\Python36\lib\site-packages\channels\hacks.py", line 10, in monkeypatch_django
      from .management.commands.runserver import Command as RunserverCommand
    File "C:\Users\gdhameeja\AppData\Local\Programs\Python\Python36\lib\site-packages\channels\management\commands\runserver.py", line 5, in &lt;module&gt;
      from daphne.server import Server, build_endpoint_description_strings
    File "C:\Users\gdhameeja\AppData\Local\Programs\Python\Python36\lib\site-packages\daphne\server.py", line 9, in &lt;module&gt;
      from twisted.internet.endpoints import serverFromString
    File "C:\Users\gdhameeja\AppData\Local\Programs\Python\Python36\lib\site-packages\twisted\internet\endpoints.py", line 41, in &lt;module&gt;
      from twisted.internet.stdio import StandardIO, PipeAddress
    File "C:\Users\gdhameeja\AppData\Local\Programs\Python\Python36\lib\site-packages\twisted\internet\stdio.py", line 30, in &lt;module&gt;
      from twisted.internet import _win32stdio
    File "C:\Users\gdhameeja\AppData\Local\Programs\Python\Python36\lib\site-packages\twisted\internet\_win32stdio.py", line 9, in &lt;module&gt;
      import win32api
  ModuleNotFoundError: No module named 'win32api'
  </code></pre>
  
  <p>Everything before installing channels seems to be working fine.
  settings.py:</p>
  
  <pre><code>INSTALLED_APPS = [
      'django.contrib.admin',
      'django.contrib.auth',
      'django.contrib.contenttypes',
      'django.contrib.sessions',
      'django.contrib.messages',
      'django.contrib.staticfiles',
      'chat',
      'channels',]
  CHANNEL_LAYERS = {
      'default': {
          'BACKEND' : 'asgi_redis.RedisChannelLayer',
          'CONFIG':{
              'hosts': [os.environ.get('REDIS_URL', 'redis://localhost:6379')],
          },
          'ROUTING' : 'chat.routing.channel_routing',
      },
  }
  </code></pre>
  
  <p>pip freeze: </p>
  
  <pre><code>C:\Users\gdhameeja\Desktop\chatapp\chat&gt;pip freeze
  asgi-redis==1.4.3
  asgiref==1.1.2
  attrs==17.2.0
  autobahn==17.9.3
  Automat==0.6.0
  channels==1.1.8
  constantly==15.1.0
  daphne==1.3.0
  django==1.11.6
  hyperlink==17.3.1
  incremental==17.5.0
  msgpack-python==0.4.8
  pytz==2017.2
  redis==2.10.6
  six==1.11.0
  Twisted==17.9.0
  txaio==2.8.2
  virtualenv==15.1.0
  websocket-client==0.44.0
  zope.interface==4.4.3
  </code></pre>