Create list of single item repeated N times

Question

I want to create a series of lists, all of varying lengths. Each list will contain the same element e, repeated n times (where n = len

Answer 1

>>> [5] * 4
[5, 5, 5, 5]

Be careful when the item being repeated is a list. The list will not be cloned: all the elements will refer to the same list!

>>> x=[5]
>>> y=[x] * 4
>>> y
[[5], [5], [5], [5]]
>>> y[0][0] = 6
>>> y
[[6], [6], [6], [6]]