You are going to act as a Python interpreter. You will be given a valid python program below. Write down what you think the result of its execution would be. Your output must be EXACTLY the result of the execution and nothing else.
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def encrypt_string(word):
    vowels = ('a', 'e', 'i', 'o', 'u') 
    encrypted_word = ""
    for ch in word: 
        if ch in vowels:
            if ch == "u":
                encrypted_word += "a"
            else:
                encrypted_word += chr(ord(ch) + 1) 
        else:
            encrypted_word += ch
    return encrypted_word

word = "python"
print(encrypt_string(word)) 


user
pythpn
assistant