如何在tkinter中安排更新(f/e，更新时钟)？

# for python 3.x use 'tkinter' rather than 'Tkinter'
import Tkinter as tk
import time
class App():
    def __init__(self):
        self.root = tk.Tk()
        self.label = tk.Label(text="")
        self.label.pack()
        self.update_clock()
        self.root.mainloop()
    def update_clock(self):
        now = time.strftime("%H:%M:%S")
        self.label.configure(text=now)
        self.root.after(1000, self.update_clock)
app=App()

#!/usr/bin/env python3
# Display UTC.
# started with https://docs.python.org/3.4/library/tkinter.html#module-tkinter
import tkinter as tk
import time
def current_iso8601():
    """Get current date and time in ISO8601"""
    # https://en.wikipedia.org/wiki/ISO_8601
    # https://xkcd.com/1179/
    return time.strftime("%Y%m%dT%H%M%SZ", time.gmtime())
class Application(tk.Frame):
    def __init__(self, master=None):
        tk.Frame.__init__(self, master)
        self.pack()
        self.createWidgets()
    def createWidgets(self):
        self.now = tk.StringVar()
        self.time = tk.Label(self, font=('Helvetica', 24))
        self.time.pack(side="top")
        self.time["textvariable"] = self.now
        self.QUIT = tk.Button(self, text="QUIT", fg="red",
                                            command=root.destroy)
        self.QUIT.pack(side="bottom")
        # initial time display
        self.onUpdate()
    def onUpdate(self):
        # update displayed time
        self.now.set(current_iso8601())
        # schedule timer to call myself after 1 second
        self.after(1000, self.onUpdate)
root = tk.Tk()
app = Application(master=root)
root.mainloop()

from tkinter import *
import time
tk=Tk()
def clock():
    t=time.strftime('%I:%M:%S',time.localtime())
    if t!='':
        label1.config(text=t,font='times 25')
    tk.after(100,clock)
label1=Label(tk,justify='center')
label1.pack()
clock()
tk.mainloop()

from tkinter import *
from tkinter import *
import _thread
import time
def update():
    while True:
      t=time.strftime('%I:%M:%S',time.localtime())
      time_label['text'] = t
win = Tk()
win.geometry('200x200')
time_label = Label(win, text='0:0:0', font=('',15))
time_label.pack()
_thread.start_new_thread(update,())
win.mainloop()

from tkinter import *
import time
def update_clock():
    timer_label.config(text=time.strftime('%H:%M:%S',time.localtime()),
                  font='Times 25')  # change the text of the time_label according to the current time
    root.after(100, update_clock)  # reschedule update_clock function to update time_label every 100 ms
root = Tk()  # create the root window
timer_label = Label(root, justify='center')  # create the label for timer
timer_label.pack()  # show the timer_label using pack geometry manager
root.after(0, update_clock)  # schedule update_clock function first call
root.mainloop()  # start the root window mainloop

from tkinter import *
from tkinter import messagebox
root = Tk()
root.geometry("400x400")
root.resizable(0, 0)
root.title("Timer")
seconds = 21
def timer():
    global seconds
    if seconds > 0:
        seconds = seconds - 1
        mins = seconds // 60
        m = str(mins)
        if mins < 10:
            m = '0' + str(mins)
        se = seconds - (mins * 60)
        s = str(se)
        if se < 10:
            s = '0' + str(se)
        time.set(m + ':' + s)
        timer_display.config(textvariable=time)
        # call this function again in 1,000 milliseconds
        root.after(1000, timer)
    elif seconds == 0:
        messagebox.showinfo('Message', 'Time is completed')
        root.quit()
frames = Frame(root, width=500, height=500)
frames.pack()
time = StringVar()
timer_display = Label(root, font=('Trebuchet MS', 30, 'bold'))

如何在tkinter中安排更新(f/e，更新时钟)？

7 个回答