[issue2144] os.environ should inherit dict

[Virgil Dupras]

Virgil Dupras added the comment:

The performance gain is rather good:

hsoft-dev:python hsoft$ ./python.exe -m "timeit" -s "import os" 
"os.environ['HOME']"
1000000 loops, best of 3: 1.16 usec per loop
hsoft-dev:python hsoft$ patch -p0 < environ-modern.diff 
patching file Lib/os.py
hsoft-dev:python hsoft$ ./python.exe -m "timeit" -s "import os" 
"os.environ['HOME']"
1000000 loops, best of 3: 0.428 usec per loop

The regression tests still pass, and modernization of the code is a nice 
thing.

+1

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nosy: +vdupras

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