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cffi / demo / pwuid.py

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from cffi import FFI
ffi = FFI()
ffi.cdef("""     // some declarations from the man page
    struct passwd {
        char *pw_name;
        ...; 
    };
    struct passwd *getpwuid(int uid);
""")
C = ffi.verify("""   // passed to the real C compiler
#include <sys/types.h>
#include <pwd.h>
""")
print str(C.getpwuid(0).pw_name)