Answers for "pandas why isnull() count()"

3

python count null values in dataframe

# Count total missing values in a dataframe

df.isnull().sum().sum()

# Gives a integer value
Posted by: Guest on April-25-2020
2

find the number of nan per column pandas

In [1]: s = pd.Series([1,2,3, np.nan, np.nan])

In [4]: s.isna().sum()   # or s.isnull().sum() for older pandas versions
Out[4]: 2
Posted by: Guest on August-03-2020

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