title: pyuic5 - ModuleNotFoundError: No module named PyQt5.sip
body: <p>I have just installed Anaconda 5.2 with Python 3.6 on my windows system. Also installed pyqt5 and pyqt5-tools via pip with administrator privilege. Now when I run pyuic5.exe for converting ui files it shows following error:</p>
  
  <pre><code>Traceback (most recent call last):
    File "C:\Users\AshfaqurRahman\Anaconda3\lib\runpy.py", line 193, in _run_module_as_main
  "__main__", mod_spec)
    File "C:\Users\AshfaqurRahman\Anaconda3\lib\runpy.py", line 85, in _run_code
  exec(code, run_globals)
    File "C:\Users\AshfaqurRahman\AppData\Roaming\Python\Python36\site-packages\PyQt5\uic\pyuic.py", line 26, in &lt;module&gt;
  from PyQt5 import QtCore
  ModuleNotFoundError: No module named 'PyQt5.sip'
  </code></pre>
  
  <p>I have tried installing PyQt5-sip package using pip. Buts its already installed in my system.</p>
  
  <p>Why this problem is occurring? How can I solve this problem?</p>