Input
col ts
row
65536 [592] [2019-04-24 22:33:11]
65537 [576, 592] [2019-04-25 04:37:13, 2019-04-25 04:37:14]
65538 [592] [2019-04-25 04:37:13]
65539 [576, 592] [2019-04-25 01:33:49, 2019-04-25 01:33:49]
65540 [592] [2019-04-25 01:33:49]
I need a transformation to make the output as
col ts
row
65536 592 2019-04-24 22:33:11
65537 576 2019-04-25 04:37:13
65537 592 2019-04-25 04:37:14
65538 592 2019-04-25 04:37:13
65539 576 2019-04-25 01:33:49
65539 592 2019-04-25 01:33:49
65540 592 2019-04-25 01:33:49
In every row, col
has a list that has the same length with a list in ts