title: Error in eclipse, when import coverage?
body: <p>in mac terminal </p>
  
  <pre><code>$ coverage help
  Coverage.py, version 3.5
  </code></pre>
  
  <p>Measure, collect, and report on code coverage in Python programs.</p>
  
  <p>While in the eclipse, I encounter error as follows: please give a hand</p>
  
  <pre><code>Error: coverage module could not be imported
  Please make sure that the coverage module (http://nedbatchelder.com/code/coverage/)
  is properly installed in your interpreter: /usr/bin/python
  Traceback (most recent call last):
    File "/Users/***/eclipse/plugins/org.python.pydev.debug_2.2.0.2011062419/pysrc/pydev_coverage.py", line 34, in execute
      import coverage #@UnresolvedImport
  ImportError: No module named coverage
  </code></pre>