>>> L = [0, 23, 234, 89, None, 0, 35, 9]
>>> [x for x in L if x is not None]
[0, 23, 234, 89, 0, 35, 9]

只是为了好玩，这里介绍了如何在不使用lambda的情况下调整过滤器来实现这一点，(我不建议使用此代码-仅用于科学目的)

>>> from operator import is_not
>>> from functools import partial
>>> L = [0, 23, 234, 89, None, 0, 35, 9]
>>> list(filter(partial(is_not, None), L))
[0, 23, 234, 89, 0, 35, 9]

对于Python 2.7(参见Raymond的回答，Python 3的等效内容):

想知道一些“不是None”的东西在python(和其他OO语言)中是否如此常见，所以在我的common .py(我用“from common import *”导入到每个模块中)中，我包含了这些行:

def exists(it):
    return (it is not None)

然后从列表中删除None元素，只需执行以下操作:

filter(exists, L)

我发现这比对应的列表理解式(Raymond在Python 2版本中展示的)更容易阅读。

from operator import is_not
from functools import partial   

filter_null = partial(filter, partial(is_not, None))

# A test case
L = [1, None, 2, None, 3]
L = list(filter_null(L))

@jamylak的回答非常好，但是如果你不想导入几个模块来完成这个简单的任务，就在原地写你自己的lambda:

>>> L = [0, 23, 234, 89, None, 0, 35, 9]
>>> filter(lambda v: v is not None, L)
[0, 23, 234, 89, 0, 35, 9]

使用列表理解可以做到如下:

l = [i for i in my_list if i is not None]

l的值为:

[0, 23, 234, 89, 0, 35, 9]

L = [0, 23, 234, 89, None, 0, 35, 9] 
result = list(filter(lambda x: x is not None, L))