numpy replace nan with 0 code example

Example 1: how to replace nan with 0 in pandas

df['product']=df['product'].fillna(0)
df['context']=df['context'].fillna(0)
df

Example 2: numpy fill na with 0

import numpy as np

A[np.isnan(A)] = 0

Example 3: python list replace nan with 0

mylist = [0 if x != x else x for x in mylist]