On Dec 27, 2:03 pm, "Gabriel Genellina" <gagsl-...@yahoo.com.ar> wrote: > En Sat, 27 Dec 2008 10:54:32 -0200, Hendrik van Rooyen > <m...@microcorp.co.za> escribió: > > > The c routine will actually break Python's normal string > > immmutability and give you back a changed ins. > > ...so don't do that! > If you require a mutable string to pass to C functions, use > ctypes.create_string_buffer() > > > It is in general not a good idea to change the passed string > > like I am doing - but you wanted to know how > > to pass a python string, and the outs example should get > > you going - a string is an array of characters in c... > > Hmmm, I don't think posting a potentially harmful example is actually a > good idea... > > -- > Gabriel Genellina
One alternative would be to return a pair of Python strings. You might want to wrap the C function you have already in another one, which allocates buffers and creates Python objects. Hendrik is right, though. The ctypes module allows us to break string immutability within Python code. -- http://mail.python.org/mailman/listinfo/python-list
