Why my function is returning None?

[Oshadha]

Hello,

Someone can explain why my function is returning None, please? I know that, if I add a "return(word)" in the last line of the "else" block, the output doesn't return "None", but neither the letters guessed so far (it's just output the underscores created by the while). Thanks for the help.

def get_guessed_word(secret_word, letters_guessed):
   '''
    secret_word: string, the word the user is guessing
    letters_guessed: list (of letters), which letters have been guessed so far
    returns: string, comprised of letters, underscores (_), and spaces that represents
      which letters in secret_word have been guessed so far.
    '''
    word = ""
    i = 0
    while i < len(secret_word):
        word = word + "_ "
        i += 1
    
    j = 0
    for char1 in secret_word:
        j+=1
        for char2 in letters_guessed:
            if char1 == char2 and j != 1:
                word = word[0:2*j-2] + char2 + word[2*j-1:2*len(secret_word)]
                
            elif char1 == char2 and j == 1: 
                word = char2 + word[1:2*len(secret_word)+1] 
                
            else:
                word = word
                
            
    return print(word)

print(get_guessed_word('house', ['t', 'o', 'k', 'e']))

Output:
_ o _ _ e 
None

Full Explanation:

You are using print() twice in both line 28 and 30
It is important that when returning a value, always return it as a variable, and not a line of code;

def func(x):
    return print(x) # Not like this

print(func("Hello")) # when you do this, you are doing something similar to the following;

print(print("hello"))
Basically printing twice.

# Better
def func_better(x):
    return x # Return as a value

print(func_better("Hello")) # This is the correct method