具体来说,当输入两个反斜杠时,两个反斜杠首先在 Python 解释器进行转义,变成一个反斜杠,然后将这一个反斜杠输入到 re 模块中,而此时 re 模块找不到相应的有效转义结尾,所以会出现错误信息 “bad escape (end of pattern) at position 0” (Python 3.8)。 常用的解决方法有两种方式: 一是使用四个反斜杠 "\...
escape character 可以将后面的字符转义 原来字符是\ 将n进行转义 这个\是一个转义字符 \n是一个转义序列 转为换行符 也可以直接转义输出 "\xhh" "\x0a" "\ooo" "\012" 8进制数 16进制数 \反斜杠 backslash 是转义字符 如果 想要输出的字符 那应该 怎么办?🤔 就是反斜杠\本身 去试试 尝试 这反斜...
示例代码如下: 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("\\")) ...
erDiagram STRING { +string_value String +add_backslash() void +observe_effect() String +escape_character() String } 具体步骤及代码示例 第一步:创建一个字符串 首先,我们需要创建一个字符串。在Python中,可以通过单引号(')或双引号(")来定义字符串。 # 创建一个字符串my_string="Hello, World!"# ...
Escape CharacterTo insert characters that are illegal in a string, use an escape character.An escape character is a backslash \ followed by the character you want to insert.An example of an illegal character is a double quote inside a string that is surrounded by double quotes:...
To insert characters that are illegal in a string, use an escape character. An escape character is a backslash\followed by the character you want to insert. An example of an illegal character is a double quote inside a string that is surrounded by double quotes: ...
\B Matches the empty string, but not at the start or end of a word. \d Matches any decimal digit; equivalent to the set [0-9] in bytes patterns or string patterns with the ASCII flag. In string patterns without the ASCII flag, it will match the whole ...
replacement repl.repl can be either a string or a callable;ifa string,backslash escapesinit are processed.If it is a callable,it's passed the match object and mustreturna replacement string to be used."""return_compile(pattern,flags).sub(repl,string,count) ...
将u'\u810f\u4e71'转换为'\u810f\u4e71'方法: s_unicode=u'\u810f\u4e71's_str=s_unicode.encode('unicode-escape').decode('string_escape')print(s_str)print(type(s_unicode),type(s_str))#运行结果 # \u810f\u4e71 #(<type'unicode'>,<type'str'>)...
sub) Help on function sub in module re: sub(pattern, repl, string, count=0, flags=0) Return the string obtained by replacing the leftmost non-overlapping occurrences of the pattern in string by the replacement repl. repl can be either a string or a callable; if a string, backslash ...