How do I build a python string from a raw (binary) ctype buffer? -


i'm playing python , ctypes , can't figure out how resolve problem. call c function fills raw binary data. code looks this: 

class client():   def __init__(self):     self.__bufsize = 1024*1024     self.__buf = ctypes.create_string_buffer(self.__bufsize)     self.client = ctypes.cdll.loadlibrary(r"i:\bin\client.dll")     def do_something(self):     len_written = self.client.fill_raw_buffer(self.__buf, self.__bufsize)     my_string = repr(self.__buf.value)     print my_string

the problem i'm receiving binary data (with 0x00) , it's truncated when tried build my_string. how can build my_string if self._buf contains null bytes 0x00?

any idea welcome. thanks

you can access buffer returned create_string_buffer() python string using raw attribute:

a = ctypes.create_string_buffer(10) a.raw  # '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'

to access first n bytes, use

a.raw[:n]

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