未知的 python 表达式 filename=r'/path/to/file' [英] Unknown python expression filename=r'/path/to/file'

问题描述

我发现这可能非常有用 python script，但遇到了这些我从未见过的表达式之前看过:

I found this potentially very useful python script, but came across these expressions which I've never seen before:

inputfilename = r'/path/to/infile'
outputfilename = r'/path/to/outfile'

我找不到搜索它的方法.r'...' 有什么作用?

I can't find a way to search for it. what does the r'...' do?

感谢您的帮助！

推荐答案

r'..' 字符串修饰符导致 '..' 字符串被解释 <强>字面.这意味着， r'My\Path\Without\Escaping' 将计算为 'My\Path\Without\Escaping' - 不会导致反斜杠转义字符.先验等效于 'My\\Path\\Without\\Escaping' 字符串，但没有原始修饰符.

The r'..' string modifier causes the '..' string to be interpreted literally. That means, r'My\Path\Without\Escaping' will evaluate to 'My\Path\Without\Escaping' - without causing the backslash to escape characters. The prior is equivalent to 'My\\Path\\Without\\Escaping' string, but without the raw modifier.

注意:字符串不能以奇数个反斜杠结尾，即r'Bad\String\Example\'不是正确的字符串.

Note: The string cannot end with an odd number of backslashes, i.e r'Bad\String\Example\' is not a correct string.

这篇关于未知的 python 表达式 filename=r'/path/to/file'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！