[issue8905] difflib: support input generators

[anatoly techtonik]

New submission from anatoly techtonik <techtonik at gmail.com>:

difflib operates on the lists, but it should be possible to use arbitrary generators. This will require internal limit on buffer size that has a side advantage of limiting difflib to available memory.

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components: Library (Lib)
messages: 107130
nosy: techtonik
priority: normal
severity: normal
status: open
title: difflib: support input generators
type: resource usage
versions: Python 3.1, Python 3.2, Python 3.3

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<http://bugs.python.org/issue8905>
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