from Tkinter import *

root=Tk()

root.title('我是root窗口！')

L=Label(root,text='我属于root')

L.pack()

f=Toplevel(root,width=30,height=20)

f.title('我是toplevel')

Lf=Label(f,text='我是toplevel')

Lf.pack()

root.mainloop()

==============================

from Tkinter import *

time1=0

time2=0

def xin1():

    global t,c1,time1

    if time1%2==0:

        time1+=1

        t['text']='西瓜被选中'

    else:

        time1+=1

        t['text']='西瓜被取消'

def xin2():

    global t,c2,time2

    if time2%2==0:

        time2+=1

        t['text']='芒果被选中'

    else:

        time2+=1

        t['text']='芒果被取消'

root=Tk()

c1=Checkbutton(root,text='西瓜',command=xin1)

c1.pack()

c2=Checkbutton(root,text='芒果',command=xin2)

c2.pack()

t=Label(root,text='')

t.pack()

root.mainloop()
================================

 import Tkinter  as tk

 def get_screen_size(window):

     return window.winfo_screenwidth(),window.winfo_screenheight()

 def get_window_size(window):

     return window.winfo_reqwidth(),window.winfo_reqheight()

 def center_window(root, width, height):

     screenwidth = root.winfo_screenwidth()

     screenheight = root.winfo_screenheight()

     size = '%dx%d+%d+%d' % (width, height, (screenwidth - width)/2, (screenheight - height)/2)

     print(size)

     root.geometry(size)

 root = tk.Tk()

 root.title('测试窗口')

 center_window(root, 300, 240)

 root.maxsize(600, 400)

 root.minsize(300, 240)

 Tkinter.Label(root, relief = tk.FLAT, text = '屏幕大小(%sx%s)\n窗口大小(%sx%s)' % (get_screen_size(root) + get_window_size(root))).pack(expand = tk.YES)

 tk.mainloop()

from Tkinter import *

class CanvasDemo:

    def __init__(self):

        window = Tk()

        window.title("CanvasDemo")

        self.canvas = Canvas(window, width = 200, height = 100, bg = "White")

        self.canvas.pack()

        frame = Frame(window)

        frame.pack()

        btRectangle = Button(frame, text = "长方形", command = self.displayRect)

        btOval = Button(frame, text="椭 圆", command=self.displayOval)

        btArc = Button(frame, text = "圆 弧", command = self.displayArc)

        btPolygon = Button(frame, text="多边形", command=self.displayPolygon)

        btLine = Button(frame, text=" 线 ", command=self.displayLine)

        btString = Button(frame, text="文 字", command=self.displayString)

        btClear = Button(frame, text="清 空", command=self.clearCanvas)

        btRectangle.grid(row = 1, column = 1)

        btOval.grid(row=1, column=2)

        btArc.grid(row=1, column=3)

        btPolygon.grid(row=1, column=4)

        btLine.grid(row=1, column=5)

        btString.grid(row=1, column=6)

        btClear.grid(row=1, column=7)

        window.mainloop()

    def displayRect(self):

        self.canvas.create_rectangle(10, 10, 190, 90, tags = "rect")

    def displayOval(self):

        self.canvas.create_oval(10, 10, 190, 90, tags = "oval", fill = "red")

    def displayArc(self):

        self.canvas.create_arc(10, 10, 190, 90, start = -90, extent = 90, width = 5, fill = "red", tags = "arc")

    def displayPolygon(self):

        self.canvas.create_polygon(10, 10, 190, 90, 30, 50, tags = "polygon")

    def displayLine(self):

        self.canvas.create_line(10, 10, 190, 90, fill = 'red', tags = "line")

        self.canvas.create_line(10, 90, 190, 10, width = 9, arrow = "last", activefill = "blue", tags = "line")

    def displayString(self):

        self.canvas.create_text(60, 40, text = "Hi,i am a string", font = "Tine 10 bold underline", tags = "string")

    def clearCanvas(self):

        self.canvas.delete("rect", "oval", "arc", "polygon", "line", "string")

CanvasDemo()

import Tkinter as tk      #引入Tkinter模块

window = tk.Tk()

def checkPassword():      #密码接收与检验

    password = "Pass"

    enteredPassword = passwordEntry.get()

    if password == enteredPassword:

        confirmLabel.config(text="Correct")

    else:

        confirmLabel.config(text="Incorrrect")

passwordLabel = tk.Label(window,text="Password:")    #创建密码标签控件与密码输入框

passwordEntry = tk.Entry(window,show="*")

button = tk.Button(window,text="Enter",command=checkPassword)  #添加按钮

confirmLabel = tk.Label(window)

#控件布局

passwordLabel.pack()

passwordEntry.pack()

button.pack()

confirmLabel.pack()

window.mainloop()