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bpo-33671: allow setting shutil.copyfile() bufsize globally - #12016
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Looking back at BPO-33671 / PR #7160: since
copyfileobj()is used by allcopy*functions one may want to setfile.read()bufsize globally asshutil.COPY_BUFSIZE = .... This may be useful on Windows where bufsize defaults to 1 MiB. I decided not to documentshutil.COPY_BUFSIZEbecause I consider it a corner case.https://bugs.python.org/issue33671