pandas substitute 0 with nan code example

Example 1: replace nan in pandas

df['DataFrame Column'] = df['DataFrame Column'].fillna(0)

Example 2: pandas replace empty string with nan

df = df.replace(r'^\s*$', np.NaN, regex=True)

Example 3: python list replace nan with 0

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