deepcopy
https://www.python-course.eu/deep_copy.php >>> from copy import deepcopy>>>>>> lst1 = ['a','b',['ab','ba']]>>>>>> lst2 = deepcopy(lst1)>>>>>> lst2[2][1] = "d">>> lst2[0] = "c";>>>>>> print lst2['c', 'b', ['ab', 'd']]>>> print lst1['a', 'b', ['ab', 'ba']]>>> lst3 = lst1[:]>>> lst3['a', 'b', ['ab', 'ba']]>>> lst3[2][1]="d">>> lst3[0]="c">>> print lst3['c', 'b', ['ab', 'd']]>>> print lst1['a', 'b',..