[issue2351] Using __(get|set|del)slice__ needs a Py3K warning

[Benjamin Peterson]

Benjamin Peterson <musiccomposition at gmail.com> added the comment:

Here's a much better patch that does warn with old-style classes.

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assignee:  -> georg.brandl
nosy: +georg.brandl
Added file: http://bugs.python.org/file10446/slice_methods_py3kwarn2.patch

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