title: Python subprocess call can't find full path on Mac OS X
body: <p>In my Python script, this line:</p>
  
  <pre><code>call("/Applications/BitRock\\ InstallBuilder\\ for\\ Qt\\ 8.5.2/bin/Builder.app/Contents/MacOS/installbuilder.sh")
  </code></pre>
  
  <p>will fail every time with the error <code>OSError: [Errno 2] No such file or directory</code></p>
  
  <p>However, if I write out the result of that string:</p>
  
  <pre><code>sys.stdout.write("/Applications/BitRock\\ InstallBuilder\\ for\\ Qt\\ 8.5.2/bin/Builder.app/Contents/MacOS/installbuilder.sh")
  </code></pre>
  
  <p>I get:</p>
  
  <pre><code>/Applications/BitRock\ InstallBuilder\ for\ Qt\ 8.5.2/bin/Builder.app/Contents/MacOS/installbuilder.sh
  </code></pre>
  
  <p>If I put that directly into the terminal, it works perfect.</p>
  
  <p>What am I missing?</p>