/Python/Valueerror: 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().

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

#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)

Source: stackoverflow.com

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

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)]

Source: grepper.com

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

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

Source: grepper.com

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

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

-1

Source: grepper.com

Similar codes

2 votes304 views1 answer
No module named 'libtorrent'
Python
10 votes303 views1 answer
Python check if number is float or int
Python
0 vote235 views1 answer
Replace all string in list python
Python
0 vote279 views1 answer
Plusieurs sites d'administration dans la même URLconf
Python
0 vote302 views1 answer
B'[AUTHENTICATIONFAILED] Invalid credentials (Failure)'
Python
0 vote306 views1 answer
Python- find multiple values in a column
Python
0 vote292 views1 answer
Find the minimum item in this RDD
Python
0 vote300 views1 answer
|select name and description powershell
Python
1 vote329 views2 answers
Python get directory of current script file
Python
0 vote294 views2 answers
Python send image server
Python