title: Problem in installing update cheetah==2.4.4
body: <p>I'm trying to install updates from my requirements.txt:</p>
  <pre><code>pip install -r requirements.txt
  </code></pre>
  <p>but when the installing has arrived to cheetah it printed this error:</p>
  <pre><code>I'm trying to run some updates require by pycharm, so for the update of cheetah I got this error:
  Collecting Cheetah==2.4.4 (from -r requirements.txt (line 6))
    Using cached https://files.pythonhosted.org/packages/cd/b0/c2d700252fc251e91c08639ff41a8a5203b627f4e0a2ae18a6b662ab32ea/Cheetah-2.4.4.tar.gz
      Complete output from command python setup.py egg_info:
      Traceback (most recent call last):
        File &quot;&lt;string&gt;&quot;, line 1, in &lt;module&gt;
        File &quot;/tmp/pip-build-rnxaujfa/Cheetah/setup.py&quot;, line 10, in &lt;module&gt;
          import SetupTools
        File &quot;/tmp/pip-build-rnxaujfa/Cheetah/SetupTools.py&quot;, line 50
          except DistutilsPlatformError, x:
                                       ^
      SyntaxError: invalid syntax
      ----------------------------------------
  Command &quot;python setup.py egg_info&quot; failed with error code 1 in /tmp/pip-build-rnxaujfa/Cheetah/
  </code></pre>
  <p>please help me !</p>