Regular expressions use the backslash character ('') to indicate special forms or to allow special characters to be used without invoking their special meaning. This collides with Python’s usage of the same character for the same purpose in string literals。 官方文档在解释之后给的例子: So r"\...
类型英文符号\abell响铃\bbackspace退格\ttab水平制表符\vvertical tab垂直制表符 换行不回车\\backslash反斜杠\"double quote双引号\'single quote单引号\xhh具体字符输出(hh)16 进制对应的ascii 字符\ooo具体字符输出(nnn)8 进制对应的ascii 字符 黑暗森林已经渐渐清晰 上图中提到的续行符 是哪个字符呢? line c...
a raw string cannot end in a single backslash (since the backslash would escape the following quo...
python raw_str = r"This is a raw string with a backslash: " print(raw_str) # 输出:This is a raw string with a backslash: text 3. **Unicode字符**:使用`\u`后跟四位十六进制数,或者`\U`后跟八位十六进制数来表示Unicode字符。例如: ```python unicode_str = "Hello, \u00A9" # © ...
importsys# backslash escapeenter ="\r\n"ifsys.platform =="win32"else"\n"# backslash liberalbackslash_liberal ="\\" 此时,如果使用 Python 字符的 split 方法,用两个反斜杠作为分割符,是没有问题的。示例代码如下: # Use str type's split() methodprint("aa\\bb".split("\\")) ...
raw_s=r'Hi\nHello' Copy Print the string: print(raw_s) Copy The output is: Hi\nHello The output includes the newline character. Including Double Backslash Characters in a String Using Raw String If you try to include double backslash characters, such as for a hostname path, in a norm...
在Python的string前面加上‘r’， 是为了告诉编译器这个string是个raw string，不要转意backslash '' 。 例如，\n 在raw string中，是两个字符，\和n， 而不会转意为换行符。由于正则表达式和 \ 会有冲突，因此，当一个字符串使用了正则表达式后，最好在前面加上'r'。例：r"\n\n\n\n\n\...
To properly represent a Windows path as a string literal, you can either manually escape each backslash character or use a raw string literal: Python path1 = "C:\\Users\\Real Python\\main.py" path2 = r"C:\Users\Real Python\main.py" Doing so will turn off the interpolation of esc...
在Python的string前面加上‘r’, 是为了告诉编译器这个string是个raw string,不要转义 backslash '\' 。 例如,\n 在raw string中,是两个字符,\和n, 而不会转义为换行符。 由于正则表达式和 \ 会有冲突,因此,当一个字符串使用了正则表达式后,最好在前面加上'r'。
If you’re not using a raw string to express the pattern, remember that Python also uses the backslash as an escape sequence in string literals; if the escape sequence isn’t recognized by Python’s parser, the backslash and subsequent character are included in the resulting string. However,...