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Wed Feb 4 14:49:37 EST 2004 · https://mail.python.org/pipermail/python-dev/2004-February/042408.html

Hi,

I just ran across something that looks like a very unfortunate interface
change in the pickle module:

Python 2.2:  dump(object, file[, bin])
Python 2.3:  dump(object, file[, protocol[, bin]])

...and indeed I have code, which uses pickle.dump(obj, f, True).

Hmm, ok, so probably this means now (under python 2.3) I'm using
protocol number 1 (==True)?!  Tricky. :-)  Maybe that warrants a comment
in the docs?

Thanks,
Chris

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[Python-Dev] pickle.dump(..) interface change ... documentation