![Python - 去除list中的空字符 Python - 去除list中的空字符](https://image.shishitao.com:8440/aHR0cHM6Ly9ia3FzaW1nLmlrYWZhbi5jb20vdXBsb2FkL2NoYXRncHQtcy5wbmc%2FIQ%3D%3D.png?!?w=700&webp=1)
list1 = ['122', '2333', '3444', '', '', None]
a = list(filter(None, list1)) # 只能过滤空字符和None
print(a) # ['122', '2333', '3444'] # Python内建filter()函数 - 过滤list
# filter()把传入的函数依次作用于每个元素,然后根据返回值是True还是False决定保留还是丢弃该元素
def not_empty(s):
return s and s.strip() list2 = ['122', '2333', '3444', ' ', '422', ' ', ' ', '54', ' ', '', None, ' ']
print(list(filter(not_empty, list2))) # ['122', '2333', '3444', '422', '54']
# 不仅可以过滤空字符和None而且可以过滤含有空格的字符
注意: Pyhton2.7 返回列表,Python3.x 返回迭代器对象