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This code works if I use raw strings only but as soon as I add f to r. It stops working. Is there a way to make f-strings work with raw strings for re?
import re lines = ''' 04/20/2009; 04/20/09; 4/20/09; 4/3/09 Mar-20-2009; Mar 20, 2009; March 20, 2009; Mar. 20, 2009; Mar 20 2009; 20 Mar 2009; 20 March 2009; 20 Mar. 2009; 20 March, 2009 Mar 20th, 2009; Mar 21st, 2009; Mar 22nd, 2009 Feb 2009; Sep 2009; Oct 2010 6/2008; 12/2009 2009; 2010 ''' rmonth = 'a' regex = fr'(\d{1,2})/(\d{1,2})/(\d{4}|\d{2})' date_found = re.findall(regex, lines) date_found 
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... in which we look at one or two ways to make life easier when working with Python regular expressions. tl;dr: You can compose verbose regular expressions using f-strings. For comparison, the same pattern without f-strings (click to expand).
Also called “formatted string literals,” f-strings are string literals that have an f at the beginning and curly braces containing expressions that will be replaced with their values.
To right align a string, we use the “:>n” symbol inside the placeholder.
The new fstrings in Python interpret brackets in their own way. You can escape brackets you want to see in the output by doubling them:
regex = fr'(\d{{1,2}})/(\d{{1,2}})/(\d{{4}}|\d{{2}})' If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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