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v0.8.1
Revision a23eecab9a0b724bdfde83d159ac2415927f042a authored by Miss Islington (bot) on 14 February 2018, 10:10:18 UTC, committed by Andrew Svetlov on 14 February 2018, 10:10:18 UTC 
bpo-32841: Fix cancellation in awaiting asyncio.Condition (GH-5665) (GH-5683)
 
(cherry picked from commit 5746510b7aef423fa4afc92b2abb919307b1dbb9)

Co-authored-by: Bar Harel <bzvi7919@gmail.com>
1 parent 2be5435
Raw File
bkfile.py 
from builtins import open as _orig_open

def open(file, mode='r', bufsize=-1):
    if 'w' not in mode:
        return _orig_open(file, mode, bufsize)
    import os
    backup = file + '~'
    try:
        os.unlink(backup)
    except OSError:
        pass
    try:
        os.rename(file, backup)
    except OSError:
        return _orig_open(file, mode, bufsize)
    f = _orig_open(file, mode, bufsize)
    _orig_close = f.close
    def close():
        _orig_close()
        import filecmp
        if filecmp.cmp(backup, file, shallow=False):
            import os
            os.unlink(file)
            os.rename(backup, file)
    f.close = close
    return f
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