如何在python 3.6中转义f字符串? [英] How to escape f-strings in python 3.6?

问题描述

我有一个想要大括号的字符串，但也可以利用f字符串功能.是否有一些适用于此的语法?

I have a string in which I would like curly-brackets, but also take advantage of the f-strings feature. Is there some syntax that works for this?

有两种方法不起作用.我想将文字文本"{bar}"作为字符串的一部分.

Here are two ways it does not work. I would like to include the literal text "{bar}" as part of the string.

foo = "test"
fstring = f"{foo} {bar}"

NameError:名称"bar"未定义

NameError: name 'bar' is not defined

fstring = f"{foo} \{bar\}"

SyntaxError:f字符串表达式部分不能包含反斜杠

SyntaxError: f-string expression part cannot include a backslash

所需结果:

'test {bar}'

看起来这个问题的答案与

Looks like this question has the same answer as How can I print literal curly-brace characters in python string and also use .format on it?, but you can only know that if you know that the format function uses the same rules as the f-string. So hopefully this question has value in tying f-string searchers to this answer.

推荐答案

尽管解析器存在自定义语法错误，但相同技巧的作用类似于在常规字符串上调用.format.

Although there is a custom syntax error from the parser, the same trick works as for calling .format on regular strings.

使用双头冰壶:

>>> foo = 'test'
>>> f'{foo} {{bar}}'
'test {bar}'

规范此处和文档此处.

这篇关于如何在python 3.6中转义f字符串?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！