pandas replace missing values in column with mean code example

Example 1: fill missing values in column pandas with mean

df.fillna(df.mean(), inplace=True)

Example 2: how to fill missing values dataframe with mean

sub2['income'].fillna((sub2['income'].mean()), inplace=True)

Example 3: replace value column by another if missing pandas

import numpy as np

df['column'] = np.where(df['column'].isnull(), 'value_if_true', 'value_if_false')