code: def _fixup_cdef_enums(string, reg=re.compile(r"=\s*(\d+)\s*<<\s*(\d+)")):
      
  
      def repl_shift(match):
          shift_by = int(match.group(2))
          value = int(match.group(1))
          int_value = ctypes.c_int(value << shift_by).value
          return "= %s" % str(int_value)
      return reg.sub(repl_shift, string)
docs: Converts some common enum expressions to constants