Python 3.5, ctypes: TypeError: bytes or integer address expected instead of str instance

Question

I\'m having an issue with ctypes. I think my type conversion is correct and the error isn\'t making sense to me. Error on line \" arg - ct.c_char_p(logfilepath) \" TypeErro

Answer 1

c_char_p takes bytes object so you have to convert your string to bytes first:

ct.c_char_p(logfilepath.encode('utf-8'))

Another solution is using the c_wchar_p type which takes a string.

Answer 2

For completeness' sake: It is also possible to call it as stream_initialize(b'stream_log.txt'). Note the b in front of the string, which causes it to be interpreted as a bytes object.