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Python Regular Expressions in Python Introduction to Regular Expressions Escapes

Kevin Nguyen
Kevin Nguyen
4,422 Points
Posted by 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

escapes.py 
import re

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

1 Answer

Geoff Parsons
Geoff Parsons
11,679 Points
Geoff Parsons
Geoff Parsons
11,679 Points

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"