Python从列表中删除所有数字 [英] Python remove all numbers from a list

问题描述

我有一个unicode元素列表，我正在尝试从中删除所有整数. 我的代码是:

I have a list of unicode elements and I'm trying to remove all integer numbers from It. My code is:

List = [u'123', u'hello', u'zara', u'45.3', u'pluto']

for el in List:
   if isinistance(el, int):
      List.remove(el)

该代码不起作用，它给了我与u'123'include相同的列表. 我需要的是这样:

The code doesn't work, It give me the same list with u'123' include. What i need is this:

List = [ u'hello', u'zara', u'45.3', u'pluto']

有人可以帮我吗?

推荐答案

您列出的列表由unicode字符串组成，这些字符串显然不是int的实例.您可以尝试在辅助函数中将它们转换为int，并以此为条件删除它们/以构造新列表.

You list consists of unicode strings which are no instances of int obviously. You can try converting them to int in a helper function and use this as a condition to remove them/ to construct a new list.

def repr_int(s):
    try: 
        int(s)
        return True
    except ValueError:
        return False

original_list = [u'123', u'hello', u'zara', u'45.3', u'pluto']

list_with_removed_ints = [elem for elem in original_list if not repr_int(elem)]

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