In [1]:

    

import tkinter

top = tkinter.Tk()
top.mainloop()


    

In [1]:

    

import tkinter

label = tkinter.Label(text='Hello World!')
label.pack()
tkinter.mainloop()


    

In [4]:

    

import tkinter

btnHello = tkinter.Button(text='Hello World!')
btnHello.pack()
tkinter.mainloop()


    

In [2]:

    

from tkinter import *           
root = Tk()                     
                                
list1     = ['java','python','php','js']
list2  = ['mobile','desktop','web']

#  创建两个列表组件
listProgram  = Listbox(root)          
listPlatform = Listbox(root)

# 第一个小部件插入数据
for item in list1:                 
    listProgram.insert(0,item)

# 第二个小部件插入数据
for item in list2:              
    listPlatform.insert(0,item)

# 将小部件放置到主窗口中
listProgram.pack()                    
listPlatform.pack()

# 进入消息循环
root.mainloop()


    

In [3]:

    

from tkinter import *

root = Tk() 

def say():
    print('Hello, I am computer')

btnHello = Button(None, text='Hello', command=say)
btnHello.pack()
root.mainloop()


    

    




Hello, I am computer
Hello, I am computer

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