替换 Python 中的 switch 语句？

Question

I want to write a function in Python that returns different fixed values based on the value of an input index.

In other languages I would use a switch or case statement, but Python does not appear to have a switch statement. What are the recommended Python solutions in this scenario?

转载于:https://stackoverflow.com/questions/60208/replacements-for-switch-statement-in-python

Answer 1

You could use a dictionary:

def f(x):
    return {
        'a': 1,
        'b': 2,
    }[x]