IT Nursery
I’m after a regex that will validate a full complex UK postcode only within an input string. All of the uncommon postcode forms must be covered as well as...
I’m trying to parse the following kind of string: [key:"val" key2:"val2"] where there are arbitrary key:”val” pairs inside. I want to grab the key name and the value. For...
How can I replace foobar with foo123bar? This doesn’t work: >>> re.sub(r'(foo)', r'\1123', 'foobar') 'J3bar' This works: >>> re.sub(r'(foo)', r'\1hi', 'foobar') 'foohibar' I think it’s a common issue when...
In Python, the (?P<group_name>…) syntax allows one to refer to the matched string through its name: >>> import re >>> match = re.search('(?P<name>.*) (?P<phone>.*)', 'John 123456') >>> match.group('name') 'John'...
How are non-capturing groups, i.e., (?:), used in regular expressions and what are they good for? 1 18 Let me try to explain this with an example. Consider the...