title: Pyinstaller stops with requirement of pypiwin32 while pypiwin32 is already installed
body: <p>I have a python script, <strong>my.py</strong> - developed in anaconda/spyder.</p>
  
  <p>it runs within the spyder IDE;</p>
  
  <p>it runs also as a command line in a dos window: </p>
  
  <p><code>python my.py</code></p>
  
  <p>I need to distribute the program to other users, so I use </p>
  
  <pre><code>pyintaller -c -F my.py
  </code></pre>
  
  <p>I get message right on my face:</p>
  
  <blockquote>
    <p>PyInstaller cannot check for assembly dependencies. <br>Please install
    PyWin32 or pywin32-ctypes.</p>
    
    <p>pip install pypiwin32</p>
  </blockquote>
  
  <p>Follow the message and run:</p>
  
  <pre><code>pip install pypiwin32
  </code></pre>
  
  <p>and this returns:</p>
  
  <blockquote>
    <p>Requirement already satisfied: pypiwin32 in
    e:\anaconda3\lib\site-packages (223) <br>Requirement already satisfied:
    pywin32>=223 in e:\anaconda3\lib\site-packages (from pypiwin32) (223)</p>
  </blockquote>
  
  <p>My python path:
  C:\python36\my\ALL>python -c "import sys; print('\n'.join(sys.path))"</p>
  
  <blockquote>
    <p>e:\anaconda3\python37.zip e:\anaconda3\DLLs e:\anaconda3\lib
    e:\anaconda3 e:\anaconda3\lib\site-packages
    e:\anaconda3\lib\site-packages\jenkinsapi-0.2.28-py2.7.egg
    e:\anaconda3\lib\site-packages\win32
    e:\anaconda3\lib\site-packages\win32\lib
    e:\anaconda3\lib\site-packages\Pythonwin</p>
  </blockquote>
  
  <p>What I am missing here?</p>