On 07/07/2010 16:29, Alexander Belopolsky wrote:
[snip...]4. Does not ctypes make it possible to replace a method of a Python-coded class with a faster C version, with something like try: connect to methods.dll check that function xyx exists replace Someclass.xyy with ctypes wrapper except: pass For instance, the SequenceMatcher heuristic was added to speedup the matching process that I believe is encapsulated in one O(n**2) or so bottleneck method. I believe most everything else is O(n) bookkeeping.The ctypes modules is very CPython centric as far as I know. For the new modules, this may be a valid way to rapidly develop accelerated versions. For modules that are already written in C, I don't see much benefit in replacing them with ctypes wrappers.
Nope, both IronPython and PyPy have ctypes implementations and Jython is in the process of "growing" one. Using ctypes for C extensions is the most portable way of providing C extensions for Python (other than providing a pure-Python implementation of course).
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