为什么两个相同的字符串不相等？ [英] Why are two same strings found to be unequal?

问题描述

我正在尝试在列表中搜索字符串。它们看起来完全一样，但是为什么不相等呢？

I'm trying to search for a string within a list. They look exactly the same but why are they not equal?

l = ['liệu',]
a = bytes(l[0],encoding='utf-8')
print(a)

i = 'liệu'
print(bytes(i,encoding='utf-8'))

print(i==l[0])

当前输出：

b'li\xc3\xaa\xcc\xa3u'
b'li\xe1\xbb\x87u'
False

我们如何做到 True ？

推荐答案

如您所见使用字节表示形式，它们都是不同的字符串：

As you can see with the bytes representation they are both different strings:

>>> a = 'liệu'
>>> b = 'liệu'
>>> a == a
True
>>> b == b
True
>>> a == b
False

在第三个值之后字母：

They differ after the third letter:

>>> for l1, l2 in zip(a, b):
...     print(l1 == l2)
... 
True
True
False
False

这并不意味着 u 不同，但是可以肯定 e 是。

This doesn't mean that the u is different,but for sure the e is.

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