我有一個正在處理的函數，它根據輸入的關鍵字顯示不同的數字，并決定使用 simpledialog.askstring() 來顯示一個消息框，我可以在其中輸入我的關鍵字。當我輸入錯誤的關鍵字時，我想顯示一個消息框，詢問我是否要重試并重新輸入關鍵字，但我似乎無法讓它為我工作。到目前為止我的代碼：from tkinter import Tkfrom tkinter import simpledialog, messageboxdef display_figure(): application_window = Tk() application_window.withdraw() answer = simpledialog.askstring("Input", "What figure do you want to look at: 'Fig1', 'Fig2', 'Fig3', or 'Fig4'?", parent=application_window) if answer == 'Fig1': (Code to display Fig1) elif answer == 'Fig2': (Code to display Fig2) elif answer == 'Fig3': (Code to display Fig3) elif answer == 'Fig4': (Code to display Fig4) else: messagebox.askretrycancel("Question", "Error: Not a recognized keyword. Do you want to try again?")當單擊生成的消息框中的“重試”按鈕時，我不確定如何循環回到上一個問題以再次詢問關鍵字，因此將不勝感激。
1 回答
MMMHUHU
TA貢獻1834條經驗 獲得超8個贊
askretrycancel總是返回布爾值。按下時重試返回True，False按下時取消。您將需要使用while循環并且在答案正確或Cancel按下之前不要破壞它。這是代碼：
from tkinter import Tk
from tkinter import simpledialog, messagebox
def display_figure():
application_window = Tk()
application_window.withdraw()
while True:
answer = simpledialog.askstring("Input", "What figure do you want to look at: 'Fig1', 'Fig2', 'Fig3', or 'Fig4'?", parent=application_window)
if answer == 'Fig1': print(answer);break
elif answer == 'Fig2': print(answer);break
elif answer == 'Fig3': print(answer);break
elif answer == 'Fig4': print(answer);break
else:
if messagebox.askretrycancel("Question", "Error: Not a recognized keyword. Do you want to try again?") == False:
break
display_figure()
添加回答
舉報
0/150
提交
取消