See attached, which will open a zipfile that contains one file and reads it a bunch of times using unbuffered and buffered idioms. This was tested on windows using python 3.2

You're in charge of coming up with a file to test it on. Sorry.

Example output:

Enter filename: test.zip
Timing unbuffered read, 5 bytes at a time. 10 loops
took 6.671999931335449
Timing buffered read, 5 bytes at a time (4000 byte buffer). 10 loops
took 0.7350001335144043