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ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all(). site:stackoverflow.com

Krypton 36 answered on August 24, 2021 Popularity 10/10 Helpfulness 2/10

answer ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all(). site:stackoverflow.com

related The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().

related The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all()

related The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().

ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all(). site:stackoverflow.com

Comment

Well pandas use bitwise & | and each condition should be wrapped in a ()

For example following works

data_query = data[(data['year'] >= 2005) & (data['year'] <= 2010)]
But the same query without proper brackets does not

data_query = data[(data['year'] >= 2005 & data['year'] <= 2010)]

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Tags: python series value-of

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Contributed on Sep 21 2021

Krypton 36

0 Answers Avg Quality 2/10

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The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().

Comment

#Python pandas
#This NOT works
result = result[(result['var'] > 0.25) or (result['var'] < -0.25)]

#This works
result = result[(result['var']>0.25) | (result['var']<-0.25)]

==> Use: & (and), | (or)

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Tags: python py

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Contributed on Aug 24 2021

Energetic Emu

0 Answers Avg Quality 2/10

The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all()

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instead of or, use |
instead of and, use &

Popularity 10/10 Helpfulness 2/10 Language python

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Contributed on Jan 10 2022

Contended Cobra

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The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().

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-1

df[~((df['price'] < 30000) & (df['mileage'] < 2000))]

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Contributed on Feb 17 2022

Difficult Dragonfly

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ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all(). site:stackoverflow.com

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ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all(). site:stackoverflow.com

Closely Related Answers

The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().

The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all()

The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().

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