[Solved] Aggregate symmetric pairs pandas

by


I used to have the same problem before , And this is my solution 

df1=df[['X','Y']].apply(sorted,1)
df.groupby([df1.X,df1.Y])['count'].sum().reset_index(name="count")
Out[400]: 
   X  Y  count
0  A  B      3
1  C  D      8

solved Aggregate symmetric pairs pandas