I've been working on improving my Central Quarantine extractor script lately. One of the snags I hit was a stupid bug in zipfile module in Python 2.x-3.4.
It has to do with archive names not matching between two different places. When such mismatch occurs zipfile simply raises an exception and refuses to extract the files.
This mismatch thing is actually a feature in Zip format that allows the files to be effortlessly renamed without any need to re-pack the various files stored inside the ZIP file.
Since I was making sure that my code runs fine on both Python 2.7.6 and 3.4 the only point of contention was the bastardized zipfile module. The one from 2.7.6 would error out with Python 3.4 and the one from 3.4 would do the same whe running on 2.7.6... I've added a conditional importing, but I've not tested it with other versions of Python...
After jumping through the hoops to ensure that my code runs properly on Python 3.4, I feel much better now that it also works perfectly well with 2.7.6.