Input being asked like 4 time, and then doesn't ask the next question.

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Python

I expect my code to ask the input from the user once, but it asks it like 4 times and doesn't go to the next one.It starts asking from the second program thing "def translate word" and then goes to the top and asks multiple times to enter a word and then stops doing anything and doesn't go to the most bottom one left.

What I have tried:

"""
should take in a single parameter which is assumed to be a single word
search the word for the index location of the first vowel (a, e, i, o, u)
return the index value of the first vowel, or a negative 1 if there is no vowel
"""
def findFirstVowel(word):
original = input('Enter a word:')
word = original.lower()
first = word[0]
vowel = ('a','e','i','o','u')
if len(original) > 0 and original.isalpha():
if first in vowel:
print (first)
else:
print ('-1')
else:
print("empty...")


"""
takes in a single parameter which is assumed to be a single word
sends that word to findFirstVowel() and stores the result sent back
uses the result of findFirstVowel() to see which of the three rules apply
uses this information to modify the word appropriately
returns the string representing the translated word
"""


def translateWord():
lst = ['sh', 'gl', 'ch', 'ph', 'tr', 'br', 'fr', 'bl', 'gr', 'st', 'sl', 'cl', 'pl', 'fl']
sentence = input('Type what you would like translated into pig-latin and press ENTER: ')
sentence = sentence.split()
for k in range(len(sentence)):
i = sentence[k]
if i[0] in ['a', 'e', 'i', 'o', 'u']:
sentence[k] = i+'way'
elif t(i) in lst:
sentence[k] = i[2:]+i[:2]+'ay'
elif i.isalpha() == False:
sentence[k] = i
else:
sentence[k] = i[1:]+i[0]+'ay'
return ' '.join(sentence)

def t(str):
return str[0]+str[1]

if __name__ == "__main__":
x = translateWord()
print(x)


"""
accept a single parameter, assumed to be one sentence
assume there are no punctuation marks IN it
assume there is a period at the end of the sentence
removes the period from the sentence and changes all to lowercase letters
breaks the sentence into individual words using split ()
use the translateWord() function to translate each word printing each word as it goes along

"""
def pigLatinTranslator(sentence):
sentence=input('Please enter a sentence to translate it:')
sentence=sentence.split()
for k in range(len(sentence).lower):
i=sentence[k]
if i[0] in ['a', 'e', 'i', 'o', 'u']:
sentence[k] = i+'way'
elif t(i) in lst:
sentence[k] = i[2:]+i[:2]+'ay'
elif i.isalpha() == False:
sentence[k] = i
else:
sentence[k] = i[1:]+i[0]+'ay'
return ' '.join(sentence)
def t(str):
return str[0]+str[1]

if __name__ == "__main__":
x = pigLatinTranslator()
print(x)