Trolls are attacking your comment section! A common way to deal with this situation is to remove all of the vowels from the trolls’ comments, neutralizing the threat.
Your task is to write a function that takes a string and returns a new string with all vowels removed.
For example, the string “This website is for losers LOL!” would become “Ths wbst s fr lsrs LL!”.
Note: For this exercise, ‘
y'isn’t considered a vowel.
This doesn’t look too bad, does it? Let’s jump right in!
The first thing we notice is that we can use a Regular Expression (RegEx) to greatly reduce the complexity of the solution. Our goal is to replace every vowel (lower and uppercase) with a blank space. We can use the Regex expression’s ‘substitute‘ method to replace all the vowels with a blank space.
In python, RegEx uses the “re” class, so let’s be sure to import that in our code:
import re def disemvowel(string_): vowelRegex = re.compile(r'[aeiouAEIOU]') ans = vowelRegex.sub("", string_) return ans print(disemvowel("This website is for losers LOL!")) >> Ths wbst s fr lsrs LL!
The code works! Let’s refactor the code to one line:
import re def disemvowel(string_): return re.compile(r'[aeiouAEIOU]').sub("", string_) print(disemvowel("This website is for losers LOL!")) >> Ths wbst s fr lsrs LL!
RegEx expressions are incredibly powerful, but I’d venture to guess that most programmers do not utilize them. Learn, utilize, and master them – they really are an irreplaceable tool in your toolbox!