3

I have a dataframe and wanted to fill the Nan values of particular column with the list derived from other calculation. 

df = pd.DataFrame([1,Nan,3,Nan], columns=['A'])
values_to_be_filled = [100.942,90.942]


df
     A
0    1
1    Nan
2    3
3  Nan



output: 

df2 
      A
 0    1
 1    100.942
 2    3
 3    90.942

I have tried use the replace function but not able to replace with the list elements. Any help would be much appreciated

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  • What happens if the DF has 3 nan's? Commented Jul 23, 2019 at 23:51
  • if there are 3 nan's then there would be 3 elements in the list Commented Jul 23, 2019 at 23:52

1 Answer 1

Reset to default
3 
df.loc[df["A"].isnull(), "A"] = values_to_be_filled
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