fillna column pandas code example

Example 1: pandas replace nan

data["Gender"].fillna("No Gender", inplace = True)

Example 2: fillna with mean pandas

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

Example 3: dataframe fillna with 0

df['column'] = df['column'].fillna(0)

Example 4: how to replace nan values with 0 in pandas

df.fillna(0)

Example 5: fillna pandas inplace

When inplace = True , the data is modified in place, which means it will return nothing and the dataframe is now updated. When inplace = False , which is the default, then the operation is performed and it returns a copy of the object. You then need to save it to something.

Example 6: 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