Python 支持所谓的 “raw string”,它最大的特点就是将反斜杠视为文字字符。 C++11 也新增了一种叫原始字符串(Raw String Literals)的类型。在原始字符串中,字符表示的就是它自己,而无需使用 "\" 转义,例如,"\n" 不表示换行符,而是表示两个常规字符:"\" 和 "n",这时使用 "\n" 将不再输出换行符。
Python支持所谓的“raw string”。Python文档这样介绍raw string: Both string and bytes literals may optionally be prefixed with a letter 'r' or 'R'; such strings are called raw strings and treat backslashes as literal characters. As a result, in string literals, '\U' and '\u' escapes in ...
The raw string’s prefix (r) changes the meaning of special character sequences that begin with a backslash (\) inside the literal.Note: To understand how Python interprets the above string, head over to the final section of this tutorial, where you’ll cover the most common types of ...
这算是一个Python语法解析的缺陷。即使是在raw字符串中，引号（不仅是末尾的引号）仍然会受到转义字符串...
Raw strings are a way of making a string in Python that has no escape sequences and instead reads every backslash as a literal backslash.Mark as read A Python tip every week Need to fill-in gaps in your Python skills? Sign up for my Python newsletter where I share one of my ...
Python interactive console Including a Newline Character in a String Using Raw String This example uses a string with a value:Hi\nHello. If you try to assign this value to a normal string, then the newline character (\n) creates a new line: ...
(string)File"D:\Python27\lib\re.py",line244,in_compileraiseerror,v# invalid expressionsre_constants.error:bogus escape(end of line)>>>reg2='\\this\\is\\a\\path'>>>g=re.match(reg,path)#按照原始字符串的理解,这里应该可以匹配上的,但是没有>>>printg.group()Traceback(most recent call...
The solution is to use Python’s raw string notation for regular expression patterns; backslashes are not handled in any special way in a string literal prefixed with 'r'. Signed-off-by: Douglas Royds <douglas.royds@taitradio.com> Signed-off-by: Richard Leitner <richard.leitner@skidata....
Python FAQ3-python 中 的原始(raw)字符串本篇源自 py2.7.9-docs 的 faq.pdf 中的“3.23 Why can’t raw strings (r-strings) end with a backslash?” 更准确的说,原始字符串即以r修饰的字符串,不能以奇数个反斜杠结束;原始字符串被设计用来作为一些处理器(主要是正则表达式引擎)的输入。这种处理器会...
[red-knot] Display raw characters for string literal Summary