to detect if a data frame has nan values
df.isnull().sum().sum()
5
to detect if a data frame has nan values
df.isnull().sum().sum()
5
find nan values in a column pandas
df['your column name'].isnull().values.any()
pandas test for nan
>>> import math
>>> x = float('nan')
>>> math.isnan(x)
True
check if a value is nan pandas
import numpy as np
import pandas as pd
val = np.nan
print(pd.isnull(val))
# True
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