How to Remove Consonants from a String

How can I remove all consonants from a given phrase?

Write a function to remove consonants from a string.

To remove consonants from a string, you can create a function called removeconsonants that converts the input string to a character vector, removes consonants, and converts the character vector back to a string.

When you need to remove all consonants from a string, the best approach is to create a function. The function should convert the input string to a character vector, loop through each character, and exclude any consonants. The resulting character vector will then be converted back to a string before returning the output.

Here's an example implementation in Python:

def removeconsonants(phrase):
   vowels = ['a', 'e', 'i', 'o', 'u']
   char_vector = list(phrase.lower())
   result = []
   for char in char_vector:
     if char in vowels or not char.isalpha():
       result.append(char)
   return ''.join(result)

input_phrase = 'Hello World'
output_phrase = removeconsonants(input_phrase)
print(output_phrase) # Output: eo o