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Python Regular Expressions in Python Introduction to Regular Expressions Escapes

Kevin Nguyen
Kevin Nguyen
4,422 Points

what is wrong with my re.search?

write a function take a string as argument and return match object, search with regular express for first number in string

import re

def first_number(string):
  return re.search('r\d', string)

1 Answer

Looks like you just have an extra character in your regular expression. All you should need is '\d' to match a number.

EDIT: Brain fart on my part, you were likely trying to use the following format and just put the 'r' on the wrong side of the quotes: r"\d"