[Python-Dev] stat module in C -- what to do with stat.py? (original) (raw)

Serhiy Storchaka storchaka at gmail.com
Thu Jun 20 21:16:08 CEST 2013

20.06.13 16:05, Christian Heimes написав(ла):

I have re-implemented the entire stat module in C. [1] It's a necessary step to fix portability issues. For most constants POSIX standards dictate only the name of the constant and its meaning but not its value. Only the values of permission bits (0644 == rw-r--r--) have fixed values.

For example SIFDIR is usually 0o40000 but it might be 0o20000 on some platforms. Common file types seem to have the same value on all important platforms. It's the only reason we were able to get away with stat.py. But uncommon file types like door, event port and whiteout don't have sensible default values. The C implementation is able to pick up the platform's values easily. What shall I do about stat.py? statmodule.c implements all features of stat.py so there is no point in using it in CPython. It's one Python file less to load on every startup. However it might still be useful to alternative implementations of Python such as Jython or PyPy. 1) keep the file stat.py but let it be shadowed by the builtin stat module. Antoine loathes my hack... 2) rename stat.py to stat.py 3) remove stat.py Opinions?

Now with enumerations in the stdlib the stat module constants are candidates for flag enumerations. How easy will be implement it on C?

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