Comment 2 for bug 381069

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Minjae (the-minjae) wrote : Re: Cannot step debugger in IPython 0.9.1 under Python 2.6.2: Pdb instance has no attribute 'curframe'

As shown above, the issue occurs when 'checkline' method of pdb is called upon. An immediate workaround is to install pydb and make ipython use pydb instead of pdb by calling ipython -pydb. This works because ipython with pydb defines 'checkline' using pydb's checkline method.