fill null values pandas 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: pandas replace nan
data["Gender"].fillna("No Gender", inplace = True)
Example 4: how to replace nan values with 0 in pandas
df.fillna(0)
Example 5: replace nan using fillna
>>> df.fillna(0)
A B C D
0 0.0 2.0 0.0 0
1 3.0 4.0 0.0 1
2 0.0 0.0 0.0 5
3 0.0 3.0 0.0 4
Example 6: replace nan using fillna
>>> df.fillna(method='ffill')
A B C D
0 NaN 2.0 NaN 0
1 3.0 4.0 NaN 1
2 3.0 4.0 NaN 5
3 3.0 3.0 NaN 4