[Python-Dev] Suggestion: stopping to trust os mtimes

[M.-A. Lemburg]

Moshe Zadka wrote:
> 
> Trusting OS-based mtimes for .pyc caching has some inherent problems.
> (Clock syncing and similar) Frankly, though I've never been bitten by
> this, it does give me an uncomfortable feeling. What if, instead, we'd use
> md5- or sha-based approach? I'm willing to bet that the 2^128 chance of
> problems is miniscule compared to the real problems clock syncing has
> already caused. (I think I remember some problem with .pyc's on IIS, but
> I may just be hallucinating)
> 
> Problems:
> .pyc size would increase by 24 bytes <wink>

Much worse: you'd have to recalculate the MD5-sum every time
you import the .pyc file...

Frankly, I don't think this is needed at all ;-)

-- 
Marc-Andre Lemburg
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