I was asked to write a code translator that would take a Python program and produce a C program. Do you have any ideas how could I approach this problem or is it even possible?
Shedskin: http://code.google.com/p/shedskin/
Boost Python: http://www.boost.org/doc/libs/1_42_0/libs/python/doc/index.html
PyCXX: http://cxx.sourceforge.net/
Cython: http://www.cython.org/
from http://wiki.python.org/moin/compile%20Python%20to%20C, there's a list of related projects.
Pyrex: http://www.cosc.canterbury.ac.nz/greg.ewing/python/Pyrex/
psyco: http://psyco.sourceforge.net/
RPython: http://code.google.com/p/rpython/
There's a fundamental question here: is the intent to basically create a Python compiler that uses C as a back-end, or to convert the program to C and maintain the C afterward?
Writing a compiler that produces (really ugly) C as its output probably isn't trivial -- a compiler rarely is, and generating code for Python will be more difficult than for a lot of other languages (dynamic typing, in particular, is hard to compile, at least to very efficient output). OTOH, at least the parser will be a lot easier than for some languages.
If by "translating", you mean converting Python to C that's readable and maintainable, that's a whole different question -- it's substantially more difficult, to put it mildly. Realistically, I doubt any machine translation will be worth much -- there are just too large of differences in how you normally approach problems in Python and C for there to be much hope of a decent machine translation.
Have a look at Shedskin. It does exactly that (well, to C++ and for a subset of Python and its modules). But it should be able to provide valuable insight as how to approach this particular problem (although writing your own will certainly not be a trivial task).
It's hard to believe that nobody has mentioned Cython -- pretty much the de facto standard for this type of job, in my opinion: http://www.cython.org/
来源：https://stackoverflow.com/questions/2525518/writing-code-translator-from-python-to-c