title: SQLAlchemy doesn't work when I create an engine
body: <p>I am trying to create a connection with a database as follows:</p>
  
  <pre><code>from sqlalchemy import create_engine
  engine = create_engine("mysql://root:password@localhost/testDB")
  con = targetEngine.connect()
  </code></pre>
  
  <p>This is the error message:</p>
  
  <pre><code>"Can't load plugin: %s:%s" % (self.group, name)
   sqlalchemy.exc.NoSuchModuleError: Can't load plugin: sqlalchemy.dialects:mysql
  </code></pre>
  
  <p>The same code was working until a few weeks ago. Ever since I had to reinstall MySQL server and the python packages I've been having this problem.</p>