If you want to hack on pycurl, here's our list of unresolved issues: NEW FEATURES/IMPROVEMENTS: * Callback handling for stream seek. * Add docs to the high-level interface. DEFICIENICES: * Using certain invalid options, it may be possible to cause a crash. This is un-Pythonic behaviour, but you somewhere have to draw a line between efficiency (and feature completeness) and safety. There _are_ quite a number of internal error checks, but tracking and catching all possible (deliberate) misuses is not a goal (and probably impossible anyway, due to the complexity of libcurl).