Comments on: Digging into Python’s PYC files http://www.gooli.org/blog/digging-into-pythons-pyc-files/ on software development and related issues Thu, 04 Dec 2008 01:57:08 +0000 http://wordpress.org/?v=2.5.1 By: gooli http://www.gooli.org/blog/digging-into-pythons-pyc-files/#comment-3348 gooli Sun, 18 May 2008 17:28:00 +0000 http://www.gooli.org/blog/digging-into-pythons-pyc-files/#comment-3348 You're right, but then then my version.xml file wouldn't really contain hashes of the files, but of some modified version of the files. I'm nitpicking I guess, but this is code that somebody else will probably have to maintain some day and that's just a little too confusing for my taste. You’re right, but then then my version.xml file wouldn’t really contain hashes of the files, but of some modified version of the files. I’m nitpicking I guess, but this is code that somebody else will probably have to maintain some day and that’s just a little too confusing for my taste.

]]> By: Markus http://www.gooli.org/blog/digging-into-pythons-pyc-files/#comment-3347 Markus Sun, 18 May 2008 17:09:26 +0000 http://www.gooli.org/blog/digging-into-pythons-pyc-files/#comment-3347 Easier would be to skip the first 8 bytes when calculating the md5 hash. Possibly adding an offset attribute to the -tags. If the file hasn't changed elsewhere, the time-stamp is irrelevant. def filehash(filename, offset = 0): f = open(filename, 'rb') f.seek(offset) data = f.read() f.close() return hashlib.md5(data).hexdigest() Easier would be to skip the first 8 bytes when calculating the md5 hash. Possibly adding an offset attribute to the -tags.
If the file hasn’t changed elsewhere, the time-stamp is irrelevant.

def filehash(filename, offset = 0):
f = open(filename, ‘rb’)
f.seek(offset)
data = f.read()
f.close()
return hashlib.md5(data).hexdigest()

]]> By: Dan Price http://www.gooli.org/blog/digging-into-pythons-pyc-files/#comment-2871 Dan Price Mon, 21 Apr 2008 23:54:54 +0000 http://www.gooli.org/blog/digging-into-pythons-pyc-files/#comment-2871 This post was very helpful-- we've been developing a packaging system and hit just exactly this problem with pyc files. This post was very helpful– we’ve been developing a packaging system and hit just exactly this problem with pyc files.

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