Creating a DF columns with elements lists of matching values from another DF

Hi All,

I’ve 2 DF pandas,

df1=pd.DataFrame({'col1':[ ['A1','A2'], ['A1','A2','A3'], ['A4','A5'], ['A2','A5'] ]})  

And I want to do vlookup between col1 in DF1 and col2 in DF2 and take col3 value, in my current code I’ve tried to break the list but the output no longer become a list

df1.set_index('col1', inplace=True)
df1['col1'] = df2.groupby('col2').col3.apply(list)
df1.reset_index(drop=True, inplace=True)

And the expected output will be like this

expected = pd.DataFrame({'col4': [ [1,2],[1,2,3],[4,5],[2,5] ]})

Really appreciate for any help/suggestions. Thanks

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