I am trying to using Python\'s re.sub() to match a string with an e character and insert curly braces immediately after the e character and after the lastdigit. For example:
I am trying to write a regular expression in vi to match any whitespace character followed by any digit. Then, at each match, insert a dollar sign between the whitespace and the digit. Here is an exam
If I have pattern ([a-z]){2,4} and string \"ab\", what would I expect to see in backre开发者_如何学编程ference \\1 ?
New to Python so please forgive my ignorance.I\'m trying to modify backreferenced strings in a regular expression.
In 开发者_StackOverflowfirefox and opera one can create a custom search engine but it passes along the search as a standard get or post variable. Is there anyway to embed that search term in the url f
The goal is to extract time and date strings from this: <strong>Date</strong> - Thursday, June 2 2011 9:00PM<br>
I am in trouble for processing XML text. I want to delete () from my text as follows: from <b>(apa-bhari(n))</b> to <b>apa-bhari(n)</b>
Basically, I\'m trying to replace parts of a string using elements from an associative array. However, I need to grab elements based on backreferences generated from capturing groups in a replace() ex
I have a string like this: $data = \'id=1 username=foobar comment=This is a sample comment\'; And I would like to remove the \\n in the third field (comment=...).
I understand that putting ?: inside of the start of the parentheses of a regular expression will prevent it from creating a backreference, which is supposed to be faster.My question is, why do this?Is
加载中,请稍侯......