如果list-element = dict-key，如何用字典中的值替换python列表中的元素？

Question

输入：

[yellow, red, green,  blue]

{green:go, yellow:attention, red:stay}

如何制作新列表：

[attention, stay, go, blue]

有没有办法用 lambda 来实现？

Answer 1

在列表理解dict.get中使用：

lst = ["yellow", "red", "green",  "blue"]
dic = {"green":"go", "yellow":"attention", "red":"stay"}
res = [dic.get(e, e) for e in lst]
print(res)

输出

['attention', 'stay', 'go', 'blue']