Question

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

如何使输入不区分大小写

Answer 1

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代码，可以使用total_ordering填写一些此类方法。

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"

Answer 2

问题是由于{（3}}

所述的input（）函数

This function does not catch user errors. If the input is not syntactically valid,
a SyntaxError will be raised. Other exceptions may be raised if there is an error 
during evaluation.


Consider using the raw_input() function for general input from users.

所以只需使用raw_input（），一切正常

如何使案例不敏感？

2 个答案: