mitsuhiko/flask-sqlalchemy — pull request #111 by xydinesh (2012-12-05 04:51:27+00:00)
Title: flask.ext.sqlalchemy

On windows 7, python2.6 can not find flaskext module, however as suggested here[1]
flask.ext.sqlalchemy worked for me.

1.http://stackoverflow.com/questions/10572498/importerror-no-module-named-sqlalchemy