One of the main concepts you have to understand when dealing with special characters in regular expressions is to distinguish between string literals and the regular expression itself.

I'm having trouble finding the correct regular expression for the scenario below: Lets say: a = "this is a sample" I want to match whole word - for example match "hi" should return False since "h...

Dec 20, 2024 · I want to filter strings in a list based on a regular expression. Is there something better than [x for x in list if r.match(x)] ?

For future reference, you might find this useful: Regular Expression HOWTO for Python 2.7.

Mar 14, 2013 · Regular expression to filter list of strings matching a pattern Asked 12 years, 8 months ago Modified 2 years, 11 months ago Viewed 22k times

Dec 21, 2012 · To escape the dot or period (.) inside a regular expression in a regular python string, therefore, you must also escape the backslash by using a double backslash (\\), making the total …

Apr 8, 2012 · As you may know, Python 1.5 adds a new regular expression module that more closely matches Perl's syntax. We've tried to be as close to the Perl syntax as possible within Python's syntax.

In Python, I can compile a regular expression to be case-insensitive using re.compile:

May 1, 2020 · 47 \1 is equivalent to re.search(...).group(1), the first parentheses-delimited expression inside of the regex. It's also, fun fact, part of the reason that regular expressions are significantly …

An r character before the regular expression in a call to search () specifies that the regular expression is a raw string. This allows backslashes to be used in the regular expression as regular characters …