如何从列表中删除非数字
问题描述：
a = [1,2,3，'aa']
i想得到[1,2,3]
a=[1,2,3,'aa']
i want to get [1,2,3]
答
尝试
a = [1,2,3,'aa']
new_items = [item for item in a if item.isdigit()]
这将为您提供一个包含数字的新列表。
This will give you a new list with numbers.