title: unable to find vcvarsall.bat
body: <p>I know there's another question about it <a href="https://stackoverflow.com/questions/2667069/cannot-find-vcvarsall-bat-when-running-a-python-script">here</a> already, but I can't follow the answer. According to <a href="https://stackoverflow.com/a/8884982/1858363">this answer</a>, I just need to add a variable. However, i don't know where the variable is created and where it's located. Normally, I work with files and folders only, so i don't know how to get add a variable. Since i thought the variable might be inside the bat files, i looked in vcvarsall.bat, vsvars32.bat, and vsDevCmd.bat. In the latter two files, i found lines saying <code>set VS110COMNTOOLS=</code>, so on the line directly after i put <code>@set VS90COMNTOOLS= C:\Program Files\Microsoft Visual Studio 11.0\Common7\Tools\
  </code> as the answer said. However, the same error occured. I tried to install Visual Studio 2010 as the answer is for 2010, but since i already have VS 2012 i wasn't able to.</p>
  
  <p>To summarize, where is exactly is the environment variable <code>VS10COMNTOOLS=C:\Program Files\Microsoft Visual Studio 10.0\Common7\Tools\
  </code>? Thanks!</p>
  
  <p>edit: sorry i confused VS 11 with 2011</p>