如何在不同類的共享資料變數中設定亂數

我正在嘗試在文本輸入框中生成一個亂數。它不起作用，因為我不確定如何共享變數。如果有幫助，我將在 Visual Studio 代碼中使用 python tkinter。變數receipt_no 應該在文本輸入框中生成1000-9999 之間的亂數。我收到一個錯誤，即“str”物件沒有屬性“set”。

import tkinter as tk
import random

class SampleApp(tk.Tk):
    def __init__(self, *args, **kwargs):
        tk.Tk.__init__(self, *args, **kwargs)
  
        self.shared_data = {"receipt_no":tk.IntVar,
                            "receipt.no":tk.IntVar,
                            "receipt.no".set(str(random.randint(1000,9999))):tk.IntVar}

        container = tk.Frame(self)
        container.pack(side="top", fill="both", expand=True)
        container.grid_rowconfigure(0, weight=1)
        container.grid_columnconfigure(0, weight=1)

        self.frames = {}
        for F in (StartPage,RandomPage):
                  
            page_name = F.__name__
            frame = F(parent=container, controller=self)
            self.frames[page_name] = frame
            frame.grid(row=0, column=0, sticky="nsew")

        self.show_frame("StartPage")
    def show_frame(self, page_name):
        frame = self.frames[page_name]
        '''Show a frame for the given page name'''

        frame.tkraise()       

class StartPage(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent, bg='#3d3d5c')
        self.controller = controller

        def next():
           controller.show_frame('RandomPage')

        next_button = tk.Button(text='Next',
                                command=next,
                                relief='raised',
                                borderwidth=3,
                                width=18,
                                height=2)
        next_button.place(x=1090, y=475)                  

class RandomPage(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent, bg='#3d3d5c')
        self.controller = controller

        order_number = tk.Label(self,
                         text="Customer order number",
                         font=('arial', 20, 'bold'),
                         foreground='#ffffff',
                         background='#33334d')
        order_number.place(anchor=tk.N, bordermode=tk.INSIDE, x=200, y=500) 
                 
        order_number_entry =tk.Entry(self,
                                      width=12,
                                      font=('Arial 20'),
                                      textvariable=self.controller.shared_data["receipt_no"])  
        order_number_entry.place(anchor=tk.N, bordermode=tk.INSIDE, x=500, y=500)  

if __name__ == "__main__":
    app = SampleApp()
    app.mainloop()

我試圖設定該值并嘗試將其分享給不同的班級。我期望得到一個介于 1000-9999 之間的隨機生成的數字。

uj5u.com熱心網友回復：

由于您正在創建一個字典來獲取receipt_no設定 Entry 小部件文本的值，因此不要使用 .set 生成其值，只需創建一個tk.IntVar()變數和一個string變數來存盤亂數。

self.shared_data = {"receipt_no":tk.IntVar(),
                    "random_receipt_no":str(random.randint(1000,9999))}

現在，要設定 Entry 小部件的文本，您可能需要使用insert方法：

order_number_entry =tk.Entry(self,
                             width=12,
                             font=('Arial 20'), 
                             textvariable = self.controller.shared_data["receipt_no"])
order_number_entry.insert(0,self.controller.shared_data["random_receipt_no"])

標籤：Python tkinter

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