pandas fillna method 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: python fillna with mean in a dataframe

df["newColumName"] = df["originalColumnName"].fillna(df["originalColumnName"].mean())

Example 4: DataFrame.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