How to remove the innermost level of nesting in a list of lists of varying lengths

Question

I\'m trying to remove the innermost nesting in a list of lists of single element length lists. Do you know a relatively easy way (converting to NumPy arrays is fine) to get

Answer 1

As in your case, innermost object has just one element. You may access the value based on index instead of using some additional function. For example:

>>> [[y[0] for y in x] for x in my_list]
[[1, 2, 3, 4, 5], [6, 7, 8], [11, 12]]

If there is possibility that your inner-most list may have more than one element, you may do:

>>> [[z for y in x for z in y] for x in my_list]
[[1, 2, 3, 4, 5], [6, 7, 8], [11, 12]]