How to deep copy a list?

Question

I have some problem with a List copy:

So After I got E0 from \'get_edge\', I make a copy of E0 by calling \'E0_copy =

Answer 1

If the contents of the list are primitive data types, you can use a comprehension

new_list = [i for i in old_list]

You can nest it for multidimensional lists like:

new_grid = [[i for i in row] for row in grid]