synching with os.walk()

[Andre Meyer]

Hi all

os.walk() is a nice generator for performing actions on all files in a
directory and subdirectories. However, how can one use os.walk() for walking
through two hierarchies at once? I want to synchronise two directories (just
backup for now), but cannot see how I can traverse a second one. I do this
now with os.listdir() recursively, which works fine, but I am afraid that
recursion can become inefficient for large hierarchies.

thanks for your help
André
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