python text conversion into Pig Latin

Question

I need a python program for converting an input sentence into Pig Latin which has 2 rules:

1. If a word begins with a consonant all consonants before the first vowel are moved to the end of the word and the letters "ay" are then added to the end. e.g. "coin" becomes "oincay" and "flute" becomes "uteflay".
2. If a word begins with a vowel then "yay" is added to the end. e.g."egg" becomes "eggyay" and "oak" becomes "oakyay".

   I have written this program so far:

   string = input('String: ')
   
   if string[0].upper() in 'BCDFGJKLMNPQSTVXZHRWY':
   
       print(string.replace(string[0],'') + string[0]+'ay')
   
   if string[0].upper() in 'AEIOUY':
       print(string + 'yay')
   #vowels = [each for each in 
   

   but this only works for one word(whereas i need the whole sentence), and the first part only replaces the first consonant, not all (whereas I need to replace all consonants before the first vowel)

Answer 1

We can try using a regex replacement with a callback function:

inp = "coin flute egg oak"
output = re.sub(r'w+', lambda m: re.sub(r'(w)(w+)', r'ay', m.group()) if not re.search(r'^[AEIOUaeiou]', m.group()) else m.group() + 'yay', inp)
print(output)  # oincay lutefay eggyay oakyay