[Python-Dev] What type of object mmap.read_byte should return on py3k? (original) (raw)
Hirokazu Yamamoto ocean-city at m2.ccsnet.ne.jp
Sat Feb 28 12:19:00 CET 2009
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Hello. I noticed mmap.read_byte returns 1-length unicode on py3k. I felt this was strange, so I created issue on bug tracker (http://bugs.python.org/issue5391) and Martin proposed this is suitable for discussion on python-dev. I'll quote messages on bug tracker here.
I wrote:
On Python3000, mmap.readbyte returns str not bytes, and mmap.writebyte accepts str. Is this intended behavior?
import mmap m = mmap.mmap(-1, 10) type(m.readbyte()) <class 'str'> m.writebyte("a") m.writebyte(b"a") Maybe another possibility. readbyte() returns int which represents byte, writebyte accepts int which represents byte. (Like b"abc"[0] returns int not 1-length bytes)
Martin wrote:
Indeed, I think it should use the "b" code, instead of the "c" code. Please discuss this on python-dev, though.
It might not be ok to backport this to 3.0, since it may break existing code.
Furthermore, all other uses of the "c" code might need to be reconsidered.
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