title: Settings preferences to pyflakes (with python-mode in vim)
body: <p>I'm getting lots of errors I don't care about: mostly this kind:</p>
  
  <pre><code>fabfile.py|2 error| W0611 'os' imported but unused [pyflakes]
  </code></pre>
  
  <p>when I import something I'm going to use later but not yet</p>
  
  <p>Is there a way (similar to a .jshintrc file when using jshint) file to Silence certain pyflakes errors warnings?</p>
  
  <p>Thanks!</p>