a = [1, 2, 3, 4]
for i in a:
    print(i)
    a.remove(i)
a
輸出：
1
3

a = {'a': 1, 'b': 2}
for i in a:
    print(i)
    a.pop(i)
a

a = {1, 2, 3, 4}
for i in a:
    print(i)
    a.remove(i)
a

a = (1, 2, 3, 4)
for i in a:
    print(i)
    a.pop(i)
a