1.删除第一个匹配数据:

>>> a = [0, 2, 3, 2]
>>> a.remove(2)
>>> a
[0, 3, 2]

2.根据index删除数据:

>>> a = [9, 8, 7, 6]
>>> del a[1]
>>> a
[9, 7, 6]

3.根据index删除数据并返回该数据:

>>> a = [4, 3, 5]
>>> a.pop(1)
3
>>> a
[4, 5]

 4. 在循环中删除元素:

a = ["a", "b", "c", "d", "e"]
for item in a[:]:
    print item
    if item == "b":
        a.remove(item)