Add key to sorting functions · Issue #3942 · pandas-dev/pandas (original) (raw)

Many python functions (sorting, max/min) accept a key argument, perhaps they could in pandas too.

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The terrible motivating example was this awful hack from this question.... for which maybe one could do

df.sort_index(key=lambda t: literal_eval(t[1:-1]))

This would still be an awful awful hack, but a slightly less awful one.