Variable assignment with strings:

name_original = 'Jon Snow'
name_new = name_original
name_original = 'Daenerys Targaryen'
print(name_original, name_new)
Variable assignment with lists (shared reference):

list_original = [1, 2, 3]
list_new = list_original
list_original[0] = -5
print('Original:', list_original, '\nNew:', list_new)
Variable assignment with lists (copying the list):

list_original = [1, 2, 3]
list_new = list_original[:]
list_original[0] = -5
print('Original:', list_original, '\nNew:', list_new)
Variable assignment with list slicing (partial copy):

list_original = [1, 2, 3]
list_new = list_original[:2]
list_original[0] = -5
print('Original:', list_original, '\nNew:', list_new)