replace zero with nan pandas 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: python dataframe replace nan with 0

In [7]: df
Out[7]: 
          0         1
0       NaN       NaN
1 -0.494375  0.570994
2       NaN       NaN
3  1.876360 -0.229738
4       NaN       NaN

In [8]: df.fillna(0)
Out[8]: 
          0         1
0  0.000000  0.000000
1 -0.494375  0.570994
2  0.000000  0.000000
3  1.876360 -0.229738
4  0.000000  0.000000

Example 3: how to replace nan values with 0 in pandas

df.fillna(0)

Example 4: pandas replace zero with blank

# in column_B of dataframe, replace zero with blanks
df['column_B'].replace(['0', '0.0'], '', inplace=True)

Example 5: python zeros to nan

a[a==0] = np.nan

Example 6: how to replace zero value in python dataframe

nonzero_mean = df[ df.col != 0 ].mean()