I am trying to merge two dataframes into a new dataframe, where two columns will be merged as a list. For example: here is df1
tkt_ticket_opened tkt_adjtimetorepair result_data_cohort_id
0 2017-01-09 05 0.075883 1
1 2017-01-09 06 0.286550 1
2 2017-01-09 07 0.124234 1
3 2017-01-09 08 0.144504 1
4 2017-01-09 09 0.416698 1
5 2017-01-09 10 0.103199 1
6 2017-01-09 11 0.063608 1
7 2017-01-09 12 0.378695 1
8 2017-01-09 13 0.686515 1
9 2017-01-09 14 0.671016 1
10 2017-01-09 15 0.406588 1
11 2017-01-09 16 0.957627 1
12 2017-01-09 17 0.504509 1
13 2017-01-09 18 0.416487 1
14 2017-01-09 19 0.412306 1
15 2017-01-09 20 0.929061 1
16 2017-01-09 21 0.421006 1
17 2017-01-09 22 0.365754 1
18 2017-01-09 23 0.557050 1
df2
tkt_ticket_opened tkt_adjtimetorepair result_data_cohort_id
0 2017-01-09 05 0.065538 0
1 2017-01-09 06 0.379438 0
2 2017-01-09 07 0.190816 0
3 2017-01-09 08 0.594454 0
4 2017-01-09 09 0.649041 0
5 2017-01-09 10 0.509891 0
6 2017-01-09 11 0.260283 0
7 2017-01-09 12 0.340179 0
8 2017-01-09 13 0.402101 0
9 2017-01-09 14 0.497638 0
10 2017-01-09 15 0.373385 0
11 2017-01-09 16 0.533326 0
12 2017-01-09 17 0.366825 0
13 2017-01-09 18 0.892164 0
14 2017-01-09 19 0.723326 0
15 2017-01-09 20 1.088171 0
16 2017-01-09 21 0.408264 0
17 2017-01-09 22 0.507147 0
18 2017-01-09 23 0.486486 0
the resulting dataframe would be
tkt_ticket_opened tkt_adjtimetorepair
0 2017-01-09 05 [0.075883, 0.065538 ]
1 2017-01-09 06 [0.286550, 0.379438 ]
2 2017-01-09 07 [0.124234, 0.190816 ]
....
Any help with this would be greatly appreciated.