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Is os.replace() atomic on Windows?

原文 2018-08-15 15:56:15 0 1 python

In the docs it says that replacing files are guaranteed to be atomic on POSIX systems. Does this mean that it's not atomic on Windows?

1 answers

As visible in this thread the atomic replace functionality for windows has been added for version 3.3.

The patch is visible here .

In the background MoveFileEx with when nessesary the MOVEFILE_REPLACE_EXISTING flag added is called.

MoveFileEx is the same method as the openjdk calls . I can't find any documentation stating it is atomic, but the community seems to rely on it.

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Related Question os.rename, os.replace and shutil.move errors on windows 10 os.link() vs. os.rename() vs. os.replace() for writing atomic write files. What is the best approach? Is Path.replace equivalent to os.replace or shutil.move? Python - How to use relative paths with os.replace? On which systems/filesystems is os.open() atomic? How to "replace" `os.execvpe` on Windows efficiently - if the "child" process is an interactive command line application? os.stat() on Windows Scapy on Windows - OS Error? os.exec on Windows Python Programing - Os Module - Replace

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Is os.replace() atomic on Windows?

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solution1 3 ACCPTED 2019-03-08 15:03:05

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3 ACCPTED 2019-03-08 15:03:05