filling nan values with mean code example

Example 1: how to fill missing values dataframe with mean

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

Example 2: how to fill nan values with mean in pandas

df.fillna(df.mean())

Example 3: get the mean of all not nan values

In [108]: np.nanmean([np.nan, 1, 2, np.nan, 3])
Out[108]: 2.0