@user3015703 In a character set you don't need to escape special characters, except for '-' or ']'. To include a dash you can either precede it with a slash, or make it the first or last character in …

Dec 20, 2024 · For Python 2.x developers, filter returns a list already. In Python 3.x filter was changed to return an iterator so it has to be converted to list (in order to see it printed out …

@nehem actually all of the regex functions in re module compile and cache the patterns. Therefore there is absolutely no efficiency gain using compile and then match than just directly …

Dec 21, 2012 · So, keep in mind the type of string you are using. To escape the dot or period (.) inside a regular expression in a regular python string, therefore, you must also escape the …

May 29, 2012 · I am trying to implement to search for a value in Python dictionary for specific key values (using regular expression as a key). Example: I have a Python dictionary which has …

I was pretty much assuming this was a throwaway script - both the regex approach and the string search approach have all sorts of inputs they'll fail on. For anything in production, I would want …

May 30, 2023 · This only works because we are using a raw-string (the regex is preceded by 'r'), otherwise we must write "\\\\boundary" in the regex (four backslashes). Additionally, without '\r', …

Mar 11, 2013 · Using Python's built-in ability to write lambda expressions, we could filter by an arbitrary regex operation as follows: import re # with foo being our pd dataframe …

Then, use re.search(regex_pattern, string_to_be_tested) to search for the pattern in the string to be tested. This will return a MatchObject which you can store to a temporary variable. You …

import re if re.match(regex, content): blah.. You could also use re.search depending on how you want it to match.