[Pythonmac-SIG] Calling diff from MacPython

[David Goodger]

Robin Siebler wrote:
> I need to compare to files and find out where they are different.  Using diff
> seems to be a much better/faster choice compared to using cmp().

cmp() just tells you if they're identical; diff tells you *what* the
differences are.  So I'd say it's more useful anyhow.

> How would I call the *nix command diff from MacPython?

Why not use Python's difflib?  It may not be the speed demon that /bin/diff
is, but it's OS-independent and gives *very* readable results.

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