在 Python 字符串文字中引用反斜杠 [英] Quoting backslashes in Python string literals

问题描述

我有一个包含双引号和反斜杠的字符串，我想将其设置为 Python 中的变量.但是，每当我尝试设置它时，引号或斜杠都会被删除或转义.举个例子:

<预><代码>>>>foo = 'baz\"'>>>富'巴兹"'

所以，我想要的不是 baz "\"，而是 baz "".如果我然后尝试转义反斜杠，它也无济于事:

<预><代码>>>>foo = 'baz "\\"'>>>富'巴兹\\"'

现在与我输入的内容相匹配，但不是我最初想要的.你如何解决这个问题?

解决方案

你被输出误导了——你采取的第二种方法实际上是你想要的，只是你不相信它.:)

<预><代码>>>>foo = 'baz "\\"'>>>富'巴兹\"'>>>打印(富)巴兹\";

顺便说一句，还有另一种字符串形式可能更清楚一些:

<预><代码>>>>打印(r'baz\"')巴兹\";

I have a string that contains both double-quotes and backslashes that I want to set to a variable in Python. However, whenever I try to set it, the quotes or slashes are either removed or escaped. Here's an example:

>>> foo = 'baz "\"'
>>> foo
'baz ""'

So instead of baz "\" like I want I'm getting baz "". If I then try to escape the backslash, it doesn't help either:

>>> foo = 'baz "\\"'
>>> foo
'baz "\\"'

Which now matches what I put in but wasn't what I originally wanted. How do you get around this problem?

解决方案

You're being mislead by output -- the second approach you're taking actually does what you want, you just aren't believing it. :)

>>> foo = 'baz "\\"'
>>> foo
'baz "\\"'
>>> print(foo)
baz "\"

Incidentally, there's another string form which might be a bit clearer:

>>> print(r'baz "\"')
baz "\"

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