變量未定義 PYTHON 3.5.2

Question

def GameMode():#creates a function with name of gamemode
    global wrong_answer_1
    for keys,values in keywords.items():#checks for the right answer
        if keys == code:#if the keys equal to the code value
            keyword_c = values
            global keyword_c
    for keys,values in definition.items():#checks for the right answer
        if keys == code + 1:#if the keys equal the code add 1
            definition_c = values#set s to be the values
    for keys,values in definition.items():#checks for the right answer
        if inc == keys:#if the keys equal the code add 1
            wrong_answer_1 = values#set s to be the values
    for keys,value in definition.items():#For the keys in the dictionary
        if keys == inc2:#if the keys equal to a value
            global wrong_answer_2
            wrong_answer_2 = value

    print(wrong_answer_2, "Hi")

我試圖讓我的變量 keyword_c、definition_c、error_answer_1 和 wrong_answer_2 成為全局變量，所以我可以在另一個函數中使用它們，但我似乎無法讓它工作，當談到 python 時，我有點新手。 正如您在上面看到的那樣，我嘗試使用“全局”，並嘗試調用變量並傳遞它們，但我對它的理解還不夠充分，無法弄清楚。

keyword_c = ''
definition_c = ''
wrong_answer_1 = ''
wrong_answer_2 = ''

我也已經預定義了變量，看看是否有任何作用，它們在那里，但它現在只是一個空字符串，所以我的程序正在獲取正在定義變量的事實。

Traceback (most recent call last):
  File "D:\Program.py", line 67, in <module>
   GameMode()#calls the function
  File "D:\Program.py", line 55, in GameMode
    print(wrong_answer_2, "Hi")
NameError: name 'wrong_answer_2' is not defined

如果我刪除將其設置為空白字符串的原始行，這是我得到的錯誤

Answer 1

你為什么不想創建一個帶有變量的類：

self.keyword_c = ''
self.definition_c = ''
self.wrong_answer_1 = ''
self.wrong_answer_2 = ''

所以變量將是全局的（如果每個方法和變量都在類中）並且使用您的方法：

def GameMode(self):#creates a function with name of gamemode
    for keys,values in keywords.items():#checks for the right answer
        if keys == code:#if the keys equal to the code value
            self.keyword_c = values
            #(...)

實際上，這是一個可能會產生錯誤的錯誤（評論它）：

def GameMode():#creates a function with name of gamemode
    global wrong_answer_1
    for keys,values in keywords.items():#checks for the right answer
        if keys == code:#if the keys equal to the code value
            keyword_c = values # keyword_c doesn't exist here, you cannot assign here
            global keyword_c   # its created here, so it now exists

Answer 2

我不確定你的函數應該做什么； 很難猜測所有的語法錯誤，但以下修復了語法錯誤，在函數頂部使用單個全局函數來處理未在函數中定義的所有內容。

def GameMode():#creates a function with name of gamemode
    global inc, inc2, code, wrong_answer_1, wrong_answer_2, keyword_c
    for keys,values in keywords.items():#checks for the right answer
        if keys == code:#if the keys equal to the code value
            keyword_c = values
    for keys,values in definition.items():#checks for the right answer
        if keys == code + 1:#if the keys equal the code add 1
            definition_c = values#set s to be the values
    for keys,values in definition.items():#checks for the right answer
        if inc == keys:#if the keys equal the code add 1
            wrong_answer_1 = values#set s to be the values
    for keys,value in definition.items():#For the keys in the dictionary
        if keys == inc2:#if the keys equal to a value
            wrong_answer_2 = value

    print(wrong_answer_2, "Hi")

keywords = {
    1: 'a',
}
definition = {
    1: 'a',
}
code = 1
inc = 1
inc2 = 1
wrong_answer_1 = None
wrong_answer_2 = None
keyword_c = None

GameMode()
print(inc, inc2, code, wrong_answer_1, wrong_answer_2, keyword_c)

這將輸出：

a Hi
1 1 1 a a a