python Python：使用字典创建switch case语句

Posted 2021-05-09

# Creates a "switch"-like statement in Python using dictionaries and defaults
# http://stackoverflow.com/a/103081

def transform_title(input, transform=False):
    """Returns a title string with optional
    string transformation.
    """
    def f(x):
        return {
            'title': x.title(),
            'upper': x.upper(),
            'fold': x.casefold(),
            'capitalize': x.capitalize()
        }.get(transform, x)
    return f(input)