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[英]Combine paired rows after pandas groupby, give NaN value if ID didn't occur twice in df
[英]Combine NaN value in rows - Pandas
檢查sorted
out = df.apply(lambda x : sorted(x,key=pd.isnull)).dropna()
Name City Birthday
0 Jacque 4.0 1.0
1 Paul 10.0 2.0
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