PyCharm 4.5.3 recently released, is a Python IDE with unique code assistance and analysis, for productive Python development on all levels. It’s an intelligent Editor, with code completion, on-the-fly error highlighting, auto-fixes. Its got support for modern web development frameworks, such as Django, Flask, Google App Engine, Pyramid, web2py, etc. PyCharm 4.5.3 changelog: a number of fixes for Django support, mostly related to the new manage.py tool. a bunch of improvements in Python refactorings and the new auto-intention: convert tuple to list and vice-versa which is available on Alt+Enter over the cursor on a list or a tuple.