Help me in solving PYHANG03A problem

help
,
1

My issue

why my solution return ' '.join(['_']*len(word)) is incorrect?

My code

import time
import random

def choose_word():
    words = ['codechef', 'programming', 'learning', 'practice', 'contests', 'rating']
    return random.choice(words)

def wordDisplay(word):
    display_word = ''
    # Update the code below this line
    return ' '.join(['_']*len(word))



if __name__ == '__main__':
    word = choose_word()
    print("Word selected for this round is '" + word + "'")
    print("String displayed during the game is", wordDisplay(word))

Learning course: Python Projects for Beginners
Problem Link: Hangman - Blanks in Python Projects for Beginners