我有一個菜單功能和選擇功能都有效。有 3 種菜單選擇。1 和 3 在某一時刻正常工作。2從來沒有。我不知道我做了什么把它搞砸了，但是當我運行模塊以通過 IDLE 進行測試時，它在第一次提示輸入我的菜單選項編號之后就無法正常工作。它應該完成一個 if 語句，然后重新啟動。我不知道還能嘗試什么。我希望我知道我改變了什么來搞砸它。tribbles = 1modulus = 2closer= 3def menu(): print(' -MENU-') print('1: Tribbles Exchange') print('2: Odd or Even?') print("3: I'm not in the mood...")menu()def choice(): choice = int(input('\n Enter the number of your menu choice: ')if choice == tribbles: bars = int(input('\n How many bars of gold-pressed latinum do you have? ')) print('\n You can buy ',bars * 5000 / 1000,' Tribbles.') menu() choice()elif choice == modulus: num = int(input('\n Enter any number:')) o_e = num % 2 if num == 0: print(num,' is an even number') elif num == 1: print(num,' is an odd number') menu() choice()elif choice == closer: print('\n Thanks for playing!') exit()else: print('Invalid entry. Please try again...') menu() choice()print(' ')choice = int(input('\n Enter the number of your menu choice: '))我希望它返回字符串加上所有公式結果，然后再次詢問，除非選擇了選項 3 并執行了 exit()。但是，它在第一次輸入后返回“輸入您的菜單選項的編號：”，然后在第二個提示符上選擇任何其他選項后返回空白。f
2 回答
忽然笑
TA貢獻1806條經驗 獲得超5個贊
在檢查 的值之前，未聲明choice該變量。choice您必須在以下行之前捕獲您的輸入：if choice == tribbles:. 您只是在定義一個函數，它甚至不返回您選擇的值或設置全局變量。
試試這個：
def menu():
print(' -MENU-')
print('1: Tribbles Exchange')
print('2: Odd or Even?')
print("3: I'm not in the mood...")
menu()
choice = int(input('\n Enter the number of your menu choice: '))
if choice == tribbles:
...
繁星點點滴滴
TA貢獻1803條經驗 獲得超3個贊
最好在文件頂部定義所有函數，并在底部調用這些函數！其次，您的縮進不正確，我假設您將其粘貼到此處后發生了這種情況。最后，您永遠不會真正調用該函數choice()，而是用提示的結果覆蓋它。
下面我將糾正這些問題。
tribbles = 1
modulus = 2
closer= 3
def menu():
print(' -MENU-')
print('1: Tribbles Exchange')
print('2: Odd or Even?')
print("3: I'm not in the mood...")
choice() #added call to choice here because you always call choice after menu
def choice():
my_choice = int(raw_input('\nEnter the number of your menu choice: ')) #you were missing a ) here! and you were overwriting the function choice again
#changed choice var to my_choice everywhere
if my_choice == tribbles:
bars = int(raw_input('\nHow many bars of gold-pressed latinum do you have? '))
print('\n You can buy ',bars * 5000 / 1000,' Tribbles.')
menu()
elif my_choice == modulus:
num = int(raw_input('\n Enter any number:'))
o_e = num % 2
if num == 0:
print(num,' is an even number')
elif num == 1:
print(num,' is an odd number')
menu()
elif choice == closer:
print('\n Thanks for playing!')
exit()
else:
print('Invalid entry. Please try again...')
menu()
print(' ')
if __name__ == "__main__": #standard way to begin. This makes sure this is being called from this file and not when being imported. And it looks pretty!
menu()
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