Python中tkinterlabel如何更新-创新互联
这篇文章将为大家详细讲解有关Python中tkinter label如何更新,小编觉得挺实用的,因此分享给大家做个参考,希望大家阅读完这篇文章后可以有所收获。
刚察网站制作公司哪家好,找成都创新互联公司!从网页设计、网站建设、微信开发、APP开发、响应式网站建设等网站项目制作,到程序开发,运营维护。成都创新互联公司于2013年开始到现在10年的时间,我们拥有了丰富的建站经验和运维经验,来保证我们的工作的顺利进行。专注于网站建设就选成都创新互联公司。例子_1:
代码_1:
from tkinter import Tk, Checkbutton, Label from tkinter import StringVar, IntVar root = Tk() text = StringVar() text.set('old') status = IntVar() def change(): if status.get() == 1: # if clicked text.set('new') else: text.set('old') cb = Checkbutton(root, variable=status, command=change) lb = Label(root, textvariable=text) cb.pack() lb.pack() root.mainloop()
例子_2:
代码_2:
from tkinter import * import time class StopWatch(Frame): '''实现一个秒表部件''' msec = 50 def __init__(self, parent=None, **kw): Frame.__init__(self, parent, kw) self._start = 0.0 self._elapsedtime = 0.0 self._running = False self.timestr = StringVar() self.makeWidgets() self.flag = True def makeWidgets(self): '''制作时间标签''' l = Label(self, textvariable = self.timestr) self._setTime(self._elapsedtime) l.pack(fill = X, expand = NO, pady = 2, padx = 2) def _update(self): self._elapsedtime = time.time() - self._start self._setTime(self._elapsedtime) self._timer = self.after(self.msec, self._update) def _setTime(self, elap): '''将时间格式改为 分:秒:百分秒''' minutes = int(elap/60) seconds = int(elap-minutes*60.0) hseconds = int((elap - minutes*60.0 - seconds) *100) self.timestr.set('%2d:%2d:%2d' %(minutes, seconds, hseconds)) def Start(self): if not self._running: self._start = time.time() - self._elapsedtime self._update() self._running = True def Stop(self): '''停止秒表''' if self._running: self.after_cancel(self._timer) self._elapsedtime = time.time() - self._start self._setTime(self._elapsedtime) self._running = False def Reset(self): '''重设秒表''' self._start = time.time() self._elapsedtime = 0.0 self._setTime(self._elapsedtime) def stopwatch(self): if self.flag == True: self.pack(side = TOP) Button(self, text = 'start', command = self.Start).pack(side = LEFT) Button(self, text = 'stop', command = self.Stop).pack(side = LEFT) Button(self, text = 'reset', command = self.Reset).pack(side = LEFT) Button(self, text = 'quit', command = self.quit).pack(side = LEFT) self.flag = False class Watch(Frame): msec = 1000 def __init__(self, parent=None, **kw): Frame.__init__(self, parent, kw) self._running = False self.timestr1 = StringVar() self.timestr2 = StringVar() self.makeWidgets() self.flag = True def makeWidgets(self): l1 = Label(self, textvariable = self.timestr1) l2 = Label(self, textvariable = self.timestr2) l1.pack() l2.pack() def _update(self): self._settime() self.timer = self.after(self.msec, self._update) def _settime(self): today1 = str(time.strftime('%Y-%m-%d', time.localtime(time.time()))) time1 = str(time.strftime('%H:%M:%S', time.localtime(time.time()))) self.timestr1.set(today1) self.timestr2.set(time1) def start(self): self._update() self.pack(side = TOP) if __name__ == '__main__': def main(): root = Tk() root.geometry('250x150') frame1 = Frame(root) frame1.pack(side = BOTTOM) sw = StopWatch(root) stpwtch = Button(frame1, text = '秒表', command = sw.stopwatch) stpwtch.pack(side = RIGHT) mw = Watch(root) mywatch = Button(frame1, text = '时钟', command = mw.start) mywatch.pack(side = LEFT) root.mainloop() main()
关于“Python中tkinter label如何更新”这篇文章就分享到这里了,希望以上内容可以对大家有一定的帮助,使各位可以学到更多知识,如果觉得文章不错,请把它分享出去让更多的人看到。
另外有需要云服务器可以了解下创新互联scvps.cn,海内外云服务器15元起步,三天无理由+7*72小时售后在线,公司持有idc许可证,提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案,具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势,专为企业上云打造定制,能够满足用户丰富、多元化的应用场景需求。
本文标题:Python中tkinterlabel如何更新-创新互联
标题网址:http://myzitong.com/article/decoje.html