title: Import Error: can't import name gcd from fractions
body: <p>I'm trying to import a function called gcd from a module called fractions with <code>from fractions import gcd</code>. For some reason, PyCharm throws an ImportError:</p>
  <pre><code>    from fractions import gcd
  ImportError: cannot import name 'gcd' from 'fractions' 
  </code></pre>
  <p>I had this working before, what am I doing wrong?</p>