[ACCEPTED]-Convert zero-padded bytes to UTF-8 string-strncpy

Accepted answer
Score: 25

Use str.rstrip() to remove the trailing NULs:

>>> 'hiya\0\0\0'.rstrip('\0')


Score: 24

Either rstrip or replace will only work if the string 10 is padded out to the end of the buffer with 9 nulls. In practice the buffer may not have 8 been initialised to null to begin with so 7 you might get something like b'hiya\0x\0'.

If you know 6 categorically 100% that the C code starts 5 with a null initialised buffer and never 4 never re-uses it, then you might find rstrip to 3 be simpler, otherwise I'd go for the slightly 2 messier but much safer:

>>> b'hiya\0x\0'.split(b'\0',1)[0]

which treats the 1 first null as a terminator.

Score: 3

Unlike the split/partition-solution this 2 does not copy several strings and might 1 be faster for long bytearrays.

data = b'hiya\0\0\0'
i = data.find(b'\x00')
if i == -1:
  return data
return data[:i]

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