title: Luigi Pipelining : No module named pwd in Windows
body: <p>I am trying to execute the tutorial given in <a href="https://marcobonzanini.com/2015/10/24/building-data-pipelines-with-python-and-luigi/" rel="nofollow noreferrer">https://marcobonzanini.com/2015/10/24/building-data-pipelines-with-python-and-luigi/</a>.</p>
  
  <p>I am able to run the program on its own using local scheduler, giving me:</p>
  
  <pre><code>Scheduled 2 tasks of which:
  * 2 ran successfully:
      - 1 PrintNumbers(n=1000)
      - 1 SquaredNumbers(n=1000)
  
  This progress looks :) because there were no failed tasks or missing external de
  pendencies
  
  ===== Luigi Execution Summary =====
  </code></pre>
  
  <p>However, to try the visualization on the server, when I try to run luigid --background, it throws me an error saying I dont have pwd module.
  I cannot find a pwd module using pip for windows. </p>
  
  <pre><code>  File "c:\users\alex\appdata\local\continuum\anaconda3\lib\site-packages
  \luigi\process.py", line 79, in daemonize
      import daemon
    File "c:\users\alex\appdata\local\continuum\anaconda3\lib\site-packages
  \daemon\__init__.py", line 42, in &lt;module&gt;
      from .daemon import DaemonContext
    File "c:\users\alex\appdata\local\continuum\anaconda3\lib\site-packages
  \daemon\daemon.py", line 25, in &lt;module&gt;
      import pwd
  ModuleNotFoundError: No module named 'pwd'
  </code></pre>
  
  <p>I am working in Anaconda Spyder with Python 3.6</p>