转 【http://www.cnblogs.com/xuxn/archive/2011/08/12/parse-html-escape-characters-in-python.html】 抓网页数据经常遇到例如>或者 这种HTML转义符,抓到字符串里很是烦人。 比方说一个从网页中抓到的字符串 html = '<abc>' 用Python可以这样处理: import HTMLParser html_parser = HTMLParser.HTMLParser...
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:...
Other escape characters used in Python: CodeResultTry it \'Single QuoteTry it » \\BackslashTry it » \nNew LineTry it » \rCarriage ReturnTry it » \tTabTry it » \bBackspaceTry it » \fForm Feed \oooOctal valueTry it » ...
Python转义字符如何不转义 在Python中,转义字符(Escape Characters)是用于在字符串中插入特殊字符的一种方式。通过使用反斜杠(\)作为前缀,可以将某些字符解释为特殊含义,例如换行符(\n)或制表符(\t)。但有时候我们可能希望保持转义字符的原始形式,而不进行转义。本文将介绍如何在Python中实现不转义转义字符,并且以一...
在HTML 中 <、>、& 等字符有特殊含义(<,> 用于标签中,& 用于转义),他们不能在 HTML 代码中直接使用,如果要在网页中显示这些符号,就需要使用 HTML 的转义字符串(Escape Sequence),例如 < 的转义字符是 <,浏览器渲染 HTML 页面时,会自动把转移字符串换成真实
在使用python的过程中,你肯定对转义字符的使用苦恼过,因为有的时候我们需要使用一些特殊符号如”$ * . ^”等的原意,有时候需要被转义后的功能,并且转义字符地使用很繁琐,容易出错,那拯救你的就非re.escape莫属了。 escape(pattern) Escape all non-alphanumeric characters in pattern. ...
You can concatenate ordinary characters, so lastmatches the string 'last'. (In the rest of this section, we’ll write RE’s in thisspecialstyle, usually without quotes, and strings to be matched 'insinglequotes'.) 某些字符,如'|'或'(',是特殊的。特殊字符不是代表的普通字符类,或会影响...
In a usual python string, the backslash is used to escape characters that may have a special meaning (like single-quote, double-quote, and the backslash itself). >>> "wt\"f" 'wt"f' In a raw string literal (as indicated by the prefix r), the backslashes pass themselves as is ...
>>> print(type(s)) <type 'str'> >>> s = s.decode('unicode-escape') >>> s u'id=215...
This is useful when we want to have a string that contains backslash and don't want it to be treated as an escape character.Unicode and ASCII stringsUnicode is international standard where a mapping of individual characters and a unique number is maintained. As of May 2019, the most recent...