segfault in DataFrame.apply with duplicate column names and multiple aggfuncs #21063

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TomAugspurger opened this issue May 15, 2018 · 0 comments · Fixed by #21066

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TomAugspurger commented May 15, 2018

In [1]: import pandas as pd

In [2]: df = pd.DataFrame([['a', 'b'], ['c', 'd']], columns=['a', 'a'])

In [3]: df.agg(['min'])
Fatal Python error: Cannot recover from stack overflow.

This was present at least in 0.22.0. Haven't looked further.

TomAugspurger added Difficulty Advanced Apply labels

TomAugspurger added this to the 0.23.1 milestone

WillAyd mentioned this issue

Prevent Unlimited Agg Recursion with Duplicate Col Names #21066

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TomAugspurger closed this as completed in #21066

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