发生异常：TypeError 'builtin_function_or_method' object is not iterable

Question

So I am following along with some beginner level projects and I am currently working on a hangman game. I have researched this error and understand that im failing to call a function and probably missing () but i have reviewed the code and cant quite see where it would or what exactly is going wrong

import random
from words import words 
import string 

def get_valid_word(words):
    word = random.choice(words) 
    while "-" in word or " " in word:
        word = random.choice(words)
    
    return word.upper
    #randomly selects a word from our list until we get a vadlid one to use for the game

def hangman():
    word = get_valid_word(words)
    word_letters = set(words) #letters in the word
    alphabet = set(string.ascii_uppercase)
    used_letters = set() # what the user has guessed

    while len(word_letters) > 0:
       # letters used
       
        print('You have used these letters: ' ' '.join(used_letters))

        #what current word is (ie W - R D)
        word_list = [letter if letter in used_letters else '-' for letter in word]
        print('Current word: ', ' '.join(word_list))

        user_letter = input('Guess a letter: ').upper()
        if user_letter in alphabet - used_letters:
            used_letters.add(user_letter)
            if user_letter in word_letters:
                word_letters.remove(user_letter)

        elif user_letter in used_letters:
            print('You have already guessed this letter')

        else:
            print('Invalid character. Please try again.')

                

hangman()

the error is with line 25 word_list = [letter if letter in used_letters else '-' for letter in word]

I've tried putting () everywhere to be honest i just cant find the mistake.

Answer 1

Missing parenthesis: return word.upper => return word.upper() – rochard4u 5 hours ago