On Mar 4, 12:50 am, Zeeshan Quireshi <zeeshan.quire...@gmail.com> wrote: > Hello, I'm using ctypes to wrap a library i wrote. I am trying to pass > it a FILE *pointer, how do i open a file in Python and convert it to a > FILE *pointer. Or do i have to call the C library using ctypes first, > get the pointer and then pass it to my function. > > Also, is there any automated way to convert c struct and enum > definitions to ctypes data types. > > Zeeshan
Python file objects have a method fileno() whic returns the 'C file descriptor', i.e. the number used by low level IO in python as well as in C. I would use this as interface between python and C and then in the C function using fdopen to get a FILE * for an already open file for which you have a file descriptor. If you don't want change the C interface, you could try using fdopen in python by loading the standard C library ang using ctypes to call the function. (I tried briefly but always get 0 from fdopen ). But if you can change the C code, why not to pass the file name? The idea of opening the file in python and manage it in C feels a bit icky ... Ciao ---- FB -- http://mail.python.org/mailman/listinfo/python-list
