python 中的拼字游戏错误

Question

我在尝试制作拼字游戏时遇到了问题。

我的代码的一部分，最终给出了错误，是：

def is_valid_word(word, hand, word_list):
"""
Returns True if word is in the word_list and is entirely
composed of letters in the hand. Otherwise, returns False.
Does not mutate hand or word_list.

word: string
hand: dictionary (string -> int)
word_list: list of lowercase strings
"""
hand_copy = hand.copy()
if word not in wordList:
    return False
for char in word:
    if char not in hand_copy:
        return False
    else:
        hand_copy[char] -= 1
    if hand_copy[char] < 0:
        return False
return True


def play_hand(hand, words):
"""
Allows the user to play the given hand, as follows:

* The hand is displayed.
* The user may input a word.
* An invalid word is rejected, and a message is displayed asking
  the user to choose another word.
* When a valid word is entered, it uses up letters from the hand.
* After every valid word: the score for that word is displayed,
  the remaining letters in the hand are displayed, and the user
  is asked to input another word.
* The sum of the word scores is displayed when the hand finishes.
* The hand finishes when there are no more unused letters.
  The user can also finish playing the hand by inputing a single
  period (the string '.') instead of a word.

hand: dictionary (string -> int)
words: list of lowercase strings
"""
n = HAND_SIZE
display_hand(hand)
print "You may enter '.' if you cannot create a word."
word = raw_input("Please enter a word:")
score = 0
totalscore = 0
while not len(hand) == 0 and not word == ".":
    print word
    if is_valid_word(word, hand, load_words()) == False:
        print "That is not a valid word"
        word = raw_input("Please enter a word:")
    elif is_valid_word(word, hand, load_words()) == True:
        score = get_word_score(word, n)
        print "You word was worth " + str(score) + " points."
        totalscore = totalscore + score
        print "Your total score is: " + str(totalscore) + "."
        print "Here is your updated hand."
        hand = update_hand(hand,word)
        display_hand(hand)
        if len(hand) != 0:
            word = raw_input("Please enter a word:")
print "Your total score is: " + str(totalscore) + "."
return

def play_game(words):
"""
Allow the user to play an arbitrary number of hands.

* Asks the user to input 'n' or 'r' or 'e'.
* If the user inputs 'n', let the user play a new (random) hand.
  When done playing the hand, ask the 'n' or 'e' question again.
* If the user inputs 'r', let the user play the last hand again.
* If the user inputs 'e', exit the game.
* If the user inputs anything else, ask them again.
"""
hand = deal_hand(HAND_SIZE)
while True:
    cmd = raw_input('Enter n to deal a new hand, r to replay the last hand, or e to end game: ')
    if cmd == 'n':
        hand = deal_hand(HAND_SIZE)
        play_hand(hand, words)
        print
    elif cmd == 'r':
        play_hand(hand, words)
        print
    elif cmd == 'e':
        break
    else:
        print "Invalid command."

我认为这应该可行。我可以开始游戏、发新手牌、重玩最后一手牌或结束游戏。但是当我尝试从给定的字母中拼出一个单词时，它给出了这个错误：

Traceback (most recent call last):
File "wordgames.py", line 257, in <module>
  play_game(words)
File "wordgames.py", line 241, in play_game
  play_hand(hand, words)
File "wordgames.py", line 204, in play_hand
 if is_valid_word(word, hand, load_words()) == False:
File "wordgames.py", line 163, in is_valid_word
  if word not in wordList:
NameError: global name 'wordlist' is not defined

我已经尝试了很多，但没有任何帮助...有人可以帮我解决这个问题吗？

提前致谢！

Answer 1

回溯底部清楚地指出了错误：

File "wordgames.py", line 163, in is_valid_word
  if word not in wordList:
NameError: global name 'wordlist' is not defined

即您没有定义 wordList - 输入变量称为 word_list。

此外，您应该修复问题中的缩进，以明确函数定义的结束位置，并且您 return 到全局范围。

正如 jonsharpe 指出的那样，您的追溯也不一致（wordlist 而不是 wordList）

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