python if column is null then

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Francesca
04 Oct 2016
1df['real_lastName'] = np.where(df['LastName'].isnull(), df['Middle'], df['LastName'] )
2
3print (df)
4  FirstName Middle LastName real_lastName
50       Tom     Ju      NaN            Ju
61      Kity    NaN      Rob           Rob
source
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