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Python Regular Expressions in Python Introduction to Regular Expressions Escapes

Posted by Jesse Cilliers
Jesse Cilliers
468 Points

REGULAR EXPRESSIONS

The question asks: Write a function names first_number that takes a string as an argument. The function should search, with a regular expression, the first number in the string and return the match object.

Where am I going wrong?

Thanks

escapes.py 
import re

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

1 Answer

Alex Koumparos
seal-mask
.a{fill-rule:evenodd;}techdegree
Alex Koumparos
Python Development Techdegree Student 36,887 Points
Alex Koumparos
.a{fill-rule:evenodd;}techdegree
Alex Koumparos
Python Development Techdegree Student 36,887 Points

Hi Jesse,

Three problems: first, you are performing a search but not doing anything with the results.

Second, you are trying to return a non-existent value (match).

Third, your regular expression is not correct. Remember that \ and / are not the same character.

Cheers

Alex