replace value in column of dataframe with suitable values [duplicate]

This question already has an answer here:

• Python Pandas: if the data is NaN, then change to be 0, else change to be 1 in data frame 3 answers

I want to replace Value Nan in F1[id1] with 0 . Else F1[id1] = 1

code: it doesn't work. How can i solve it please F1.id1 = [0 if pd.isna(e) else 1 for e in F1.id1] Here the output ofF1