>>> a = [0, 2, 3, 2]
>>> a.remove(2)
>>> a
[0, 3, 2]
>>> a = [3, 2, 2, 1]
>>> del a[1]
>>> a
[3, 2, 1]
>>> a = [4, 3, 5]
>>> a.pop(1)
3
>>> a
[4, 5]
#错误信息也不一样
>>> a = [4, 5, 6]
>>> a.remove(7)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ValueError: list.remove(x): x not in list
>>> del a[7]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
IndexError: list assignment index out of range
>>> a.pop(7)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
IndexError: pop index out of range