Python count null values in dataframe Code Example - Coding

count nan pandas

#Python, pandas
#Count missing values for each column of the dataframe df

df.isnull().sum()

python count null values in dataframe

# Count total missing values in a dataframe

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

# Gives a integer value

df count missing values

In [5]: df = pd.DataFrame({'a':[1,2,np.nan], 'b':[np.nan,1,np.nan]})

In [6]: df.isna().sum()
Out[6]:
a    1
b    2
dtype: int64

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