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Python Regular Expressions in Python Introduction to Regular Expressions Negated Numbers

Andy McDonald
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Andy McDonald
Python Development Techdegree Graduate 13,801 Points
Posted by Andy McDonald
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Andy McDonald
Python Development Techdegree Graduate 13,801 Points

Negating numbers from string

Took a nice little break from coding and cant remember how to negate from a string. tried doing [\d^567] and [\d][^567] and just cant figure out how to get the right string from this.

negate.py 
import re

string = '1234567890'

good_numbers = re.findall(r"[\d^567]+", string)

1 Answer

Jeff Muday
MOD
Jeff Muday
Treehouse Moderator 28,722 Points
Jeff Muday
Jeff Muday
Treehouse Moderator 28,722 Points

There are many solutions, a real simple one is this--

It takes any digits 0 through 4 and 8 through 9.

good_numbers = re.findall(r'[0-4]*[8-9]*', string)