################################################################################3#删除
#remove pop del
#删除列表中的xiali：
a=['xiaoxing','xiaoliu','xiaozhang','xiaohong','xiaoli','xiaozhao']
a.remove("xiaoli")
print(a)
输出结果：
['xiaoxing', 'xiaoliu', 'xiaozhang', 'xiaohong', 'xiaozhao']
#删除列表中的指定的第4位，xiali（索引删除）：
a=['xiaoxing','xiaoliu','xiaozhang','xiaohong','xiaoli','xiaozhao']
a.pop(4)
print(a)
输出结果：
['xiaoxing', 'xiaoliu', 'xiaozhang', 'xiaohong', 'xiaozhao']
#删除列表中的指定的第4位，xiali（索引删除）,并提取删除的项：
a=['xiaoxing','xiaoliu','xiaozhang','xiaohong','xiaoli','xiaozhao']
b=a.pop(4)
print(b)
输出结果：
xiaoli
#删除a中的xiaoli：
a=['xiaoxing','xiaoliu','xiaozhang','xiaohong','xiaoli','xiaozhao']
del a[4]
print(a)
输出结果：
['xiaoxing', 'xiaoliu', 'xiaozhang', 'xiaohong', 'xiaozhao']
