Question

我想显示我显示信息的时间。我做到了，但时间不会更新。它将保持为我启动主循环的时间。下面我附上了我的代码。我会感激任何形式的帮助，因为我是一个努力学习Python的菜鸟。谢谢。

    from tkinter import *
    import time

    time3 = time.strftime('%H:%M:%S')

    def tick():
        global time1
        time2 = time.strftime('%H:%M:%S')
        clock.config(text=time2)
        clock.after(200, tick)

    root = Tk()
    root.title("Test GUI")
    time1 = ' '


    def newfile():
        message = (time3 + ':' + "Creating new file..... \n")
        text.insert(0.0, message)

    def openfile():
        message = (time3 + ':' + "Opening existing file..... \n")
        text.insert(0.0, message)

    def starttest():
        message = (time3 + ':' + "Start testing \n")
        text.insert(0.0, message)

    def stoptest():
        message = (time3 + ':' + "Stop testing \n")
        text.insert(0.0, message)

    topFrame = Frame(root)
    topFrame.pack(side = TOP)
    bottomFrame = Frame(root)
    bottomFrame.pack(side = BOTTOM)

    clock = Label(root, font=('times', 10, 'bold'), bd = 1, relief = SUNKEN, anchor = E)
    but1 = Button(topFrame, text = "START", command = starttest) 
    but2 = Button(topFrame, text = "STOP", command = stoptest)
    text = Text(topFrame, width = 35, height = 5, wrap = WORD)

    clock.pack(side = BOTTOM, fill = X)
    but1.grid(row = 3, column = 3)
    but2.grid(row = 3, column = 4)
    text.grid(row = 1, column = 0, columnspan =2, sticky = W)

    menu = Menu(topFrame)
    root.config(menu = menu)

    subMenu = Menu(menu)
    menu.add_cascade(label = "File", menu = subMenu)
    subMenu.add_command(label = "New File", command = newfile)
    subMenu.add_command(label = "Open File", command = openfile)  

    tick()
    root.mainloop()

Answer 1

首先，我建议您将应用程序编写为一个类（请参阅Best way to structure a tkinter application），因为它将更有条理。

class Timer(tk.Frame): 
    def __init__(self, parent): # create the time frame...
        self.parent = parent
        self.time_1 = " "
        self.time_label = tk.Label(text=self.time_1)
        self.time_label.pack()
        self.random_lbl = tk.Label(text="hi lol")
        self.random_lbl.pack()
        self.update_clock() # we start the clock here.

当您更新时间时，请坚持使用您当时使用的变量（例如，在这种情况下，它是时间_1）：

    def update_clock(self): # update the clock...
        self.time_2 = time.strftime("%H:%M:%S")
        self.time_1 = self.time_2 # we are changing time_1 here.
        self.time_label.config(text=self.time_1)
        self.parent.after(200, self.update_clock) # then we redo the process.

root = tk.Tk() # create the root window.
timer = Timer(root)
root.mainloop()

Python Tkinter更新消息的时间

1 个答案: