python - 转义单引号 (') in raw string r' ...'

Question

我要打印出来

this is '(single quote) and "(double quote)

我使用以下(我想在这里使用原始字符串'r')

a=r'this is \'(single quote) and "(double quote)' 

但是打印出来了

this is \'(single quote) and "(double quote)

在原始字符串中转义 ' 的正确方法是什么？

Answer 1

引自Python String Literals Docs ,

When an 'r' or 'R' prefix is present, a character following a backslash is included in the string without change, and all backslashes are left in the string. For example, the string literal r"\n" consists of two characters: a backslash and a lowercase 'n'. String quotes can be escaped with a backslash, but the backslash remains in the string; for example, r"\"" is a valid string literal consisting of two characters: a backslash and a double quote.

有两种方法可以解决这个问题

1. 使用多行原始字符串，如 Python Strings 部分所述

   print(r"""this is '(single quote) and "(double quote)""")
   # this is '(single quote) and "(double quote)
   

2. 使用 String literal concatenation ,

   print(r"this is '(single quote) and " r'"(double quote)')
   # this is '(single quote) and "(double quote)