python - 是否存在任何类型的倒置 if？在 python

Question

我有一本字典和一个字符串，还有一个我想返回“y”的函数，但现在可以返回“y”或“z”:

import re

def find_my_keyword():
   dict_colour = {
        "x": ["back", "blue", "green"],
        "y": ["yellow", "white", "green"],
        "z": ["yellow", "white"]
        }
   str1 = "I have yellow, green and white"

   for colour, keywords in dict_colour.items():
        if all(re.search(kw, str1) for kw in keywords):
            return colour

有什么方法可以在我的 z 列表中添加新的数组，比如 not green:

"z": ["yellow", "white", =! "green"] ?

或者是否有任何库可以在 python 中执行此功能？

Answer 1

没有。我会推荐这样的东西:

...
"y": {'has':["yellow", "white", "green"], 'hasnt':[]}
"z": {'has':["yellow", "white"], 'hasnt': ["green"]}
...

for colour, keywords in dict_colour.items():
    if all(kw in str1 for kw in keywords['has']) and not any(kw in str1 for kw in keywords['hasnt']):
        return colour