如何使大小写不敏感？ [英] How to make case insensitive?

问题描述

int_string = input("What is the initial string? ")
int_string = int_string.lower()

如何使输入的大小写不敏感

How do I make the input case insensitive

推荐答案

class CaseInsensitiveStr(str):
    def __eq__(self, other):
        return str.__eq__(self.lower(), other.lower())
    def __ne__(self, other):
        return str.__ne__(self.lower(), other.lower())
    def __lt__(self, other):
        return str.__lt__(self.lower(), other.lower())
    def __gt__(self, other):
        return str.__gt__(self.lower(), other.lower())
    def __le__(self, other):
        return str.__le__(self.lower(), other.lower())
    def __ge__(self, other):
        return str.__ge__(self.lower(), other.lower())

int_string = CaseInsensitiveStr(input("What is the initial string? "))

如果您不喜欢所有重复性代码，则可以使用 total_ordering 来填充一些这样的方法。

If you don't like all the repetitive code, you can utilise total_ordering to fill in some of the methods like this.

from functools import total_ordering

@total_ordering
class CaseInsensitiveMixin(object):
    def __eq__(self, other):
        return str.__eq__(self.lower(), other.lower())
    def __lt__(self, other):
        return str.__lt__(self.lower(), other.lower())

class CaseInsensitiveStr(CaseInsensitiveMixin, str):
    pass

测试用例：

s = CaseInsensitiveStr("Foo")
assert s == "foo"
assert s == "FOO"
assert s > "bar"
assert s > "BAR"
assert s < "ZAB"
assert s < "ZAB"

这篇关于如何使大小写不敏感？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！