Created
March 8, 2018 17:15
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simples exemplos da passagem por referência em python
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| l1 = [1,2] | |
| l2 = l1 | |
| l1.append(3) | |
| l2 | |
| def teste(lista): | |
| for i in range(4, 10): | |
| lista.append(i) | |
| teste(l1) | |
| l2 | |
| l1 == l2 | |
| id(l1) == id(l2) | |
| import copy | |
| l1 = [1, 2] | |
| l2 = copy.copy(l1) | |
| id(l1) == id(l2) | |
| l1.append(3) | |
| l2 | |
| l1 | |
| l1 = [[1,2,3], [4,5,6]] | |
| l2 = copy(l1) | |
| id(l1) == id(l2) | |
| id[l1[0]] == id(l2[0]) | |
| l1[0].append(99) | |
| l2 | |
| l1 = [[1,2,3], [4,5,6]] | |
| l2 = copy.deepcopy(l1) | |
| id(l1) == id(l2) | |
| id(l1[0]) == id(l2[0]) | |
| l1[0].append(99) | |
| l2 | |
| l1 |
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