title: Issue while starting migration wizard in mysql workbench
body: <p>I am trying to migrate from postgres to mysql database using mysql workbench. I have installed postgres into my system and its working fine.</p>
  <p>When i start migration wizard and dependency error shows as,</p>
  <pre><code>Could not import the pyodbc python module. You need pyodbc 2.1.8 or newer or migrations from RDBMSes other than MYSQL.
  </code></pre>
  <p>then after ignoring this error when i actually start the migration process it shows me another error in log,</p>
  <pre><code>SystemError: ImportError(&quot;No module named pyodbc&quot;): error calling Python module function DbPostgresqlRE.connect
  ERROR: Error during Connect to source DBMS: ImportError(&quot;No module named pyodbc&quot;): error calling Python module function DbPostgresqlRE.connect
  ERROR: Exception in task 'Connect to source DBMS': SystemError('ImportError(&quot;No module named pyodbc&quot;): error calling Python module function DbPostgresqlRE.connect',)
  </code></pre>
  <p>After googling a bit I reinstalled or newly installed few things, but it did not work as the same error popups every time.
  I tried renaming the python file , dll file , manually copied installed pyodbc.py, installed different versions of python but still the same.</p>
  <p>how to resolve this issue ?</p>