python count null values in dataframe
# Count total missing values in a dataframe
df.isnull().sum().sum()
# Gives a integer valuepython count null values in dataframe
# Count total missing values in a dataframe
df.isnull().sum().sum()
# Gives a integer valuehow to count non null values in pandas
#Count non null values in a pandas dataframe
df.notnull().sum().sum()How many columns have null values present in them? in pandas
import pandas as pd
df = pd.DataFrame({'a':[1,2,np.nan], 'b':[np.nan,1,np.nan],'c':[np.nan,2,np.nan], 'd':[np.nan,np.nan,np.nan]})
print(pd.isnull(df).sum())Copyright © 2021 Codeinu
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