Python入门案例之Hello

from Tkinter import *
class Application(Frame):
    def say_hi(self):
        print ‘hello‘

    def createWiegets(self):
        self.QUIT = Button(self)
        self.QUIT["text"] = "QUIT"
        self.QUIT["fg"] = "red"
        self.QUIT["command"] = self.quit

        self.QUIT.pack({"side":"left"})
        self.hi_there = Button(self)
        self.hi_there["text"] = "hello"
        self.hi_there["command"] = self.say_hi

        self.hi_there.pack({"side":"left"})

    def __init__(self,master=None):
        Frame.__init__(self,master)
        self.pack()
        self.createWiegets()

root = Tk()
app = Application(master = root)
app.mainloop()
root.destroy()

这段代码说明了如何使用Python来创建一个图形界面。使用的是python中的Tkinter这个图形界面库。

• 导入相应的模块：from Tkinter import *
• 定义一个类，继承Frame

class Application(Frame):
    def say_hi(self):
        print ‘hello‘

    def createWiegets(self):
        self.QUIT = Button(self)
        self.QUIT["text"] = "QUIT"
        self.QUIT["fg"] = "red"
        self.QUIT["command"] = self.quit

        self.QUIT.pack({"side":"left"})
        self.hi_there = Button(self)
        self.hi_there["text"] = "hello"
        self.hi_there["command"] = self.say_hi

        self.hi_there.pack({"side":"left"})

    def __init__(self,master=None):
        Frame.__init__(self,master)
        self.pack()
        self.createWiegets()

• 定义控件

def createWiegets(self):
        self.QUIT = Button(self)
        self.QUIT["text"] = "QUIT"
        self.QUIT["fg"] = "red"
        self.QUIT["command"] = self.quit

        self.QUIT.pack({"side":"left"})
        self.hi_there = Button(self)
        self.hi_there["text"] = "hello"
        self.hi_there["command"] = self.say_hi

        self.hi_there.pack({"side":"left"})

• 创建对象并使用

root = Tk()
app = Application(master = root)
app.mainloop()
root.destroy()

在上面的代码片段中，root是代表的是窗口的容器，我们创建Application对象，并且指定了它的窗口容器，开启消息队列循环，最后销毁窗口。