GUI

from tkinter import *

class WidgetDemo:
    def __init__(self):
        window=Tk()
        window.title("Widget Demo")

        frame1=Frame(window)
        frame1.pack()
        self.v1=IntVar()#int类型的变量
        cbtBold=Checkbutton(frame1,text="Bold",variable=self.v1,command=self.processCheckButton)#checkbutton可在值之间切换
        self.v2=IntVar()
        rbRed=Radiobutton(frame1,text="red",bg="red",variable=self.v2,value=1,command=self.processRadiusButton)#radiobutton单击单选变量
        rbyellow=Radiobutton(frame1,text="yellow",bg="yellow",variable=self.v2,value=2,command=self.processRadiusButton)
        cbtBold.grid(row=1,column=1)#对几个按钮进行排版
        rbRed.grid(row=1,column=2)
        rbyellow.grid(row=1,column=3)

        frame2=Frame(window)
        frame2.pack()
        label=Label(frame2,text="enter your name: ")
        self.name=StringVar()
        entryname =Entry(frame2,textvariable=self.name)
        btGetname=Button(frame2,text="get name",command=self.processButton)
        message=Message(frame2,text=" it is a widgets demo")#label可显示图像和文字，message只能显示文字
        label.grid(row=1,column=1)
        entryname.grid(row=1,column=2)
        btGetname.grid(row=1,column=3)
        message.grid(row=1,column=4)

        text=Text(window)
        text.pack()
        text.insert(END,"A\n")#从结尾处插入
        text.insert(END,"B\n")
        text.insert(END,"C\n")
        window.mainloop()

    def processCheckButton(self):
        print("check button is "+("checked"if self.v1.get()==1 else "unchecked"))
    def processRadiusButton(self):
        print(("red" if self.v2.get()==1 else "yellow")+" is selected")
    def processButton(self):
        print("your name is "+self.name.get())

WidgetDemo()
#只有window下属一个等级的要pack，其他不用

效果图

image.png

from tkinter import *

class canvasDemo:
    def __init__(self):
        window=Tk()
        window.title("canvas")

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

        frame=Frame(window)
        frame.pack()
        drawrectangle=Button(frame,text="Rectangle",command=self.displayrect)
        drawoval=Button(frame,text="Oval",command=self.displayOval)
        drawarc=Button(frame,text="Arc",command=self.displayArc)
        drawpolygon=Button(frame,text="Polygon",command=self.diaplayPolygon)
        drawline=Button(frame,text="Line",command=self.displayLine)
        drawstring=Button(frame,text="string",command=self.displayString)
        clearup=Button(frame,text="clear",command=self.cleanup)
        drawrectangle.grid(row=1,column=1)
        drawoval.grid(row=1,column=2)
        drawarc.grid(row=1,column=3)
        drawline.grid(row=1,column=4)
        drawstring.grid(row=1,column=5)
        drawpolygon.grid(row=1,column=6)
        clearup.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,fill="red",tags="oval")

    def displayArc(self):
        self.canvas.create_arc(10,10,190,90,start=0,extent=90,width=8,fill="red",tags="arc")

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

    def displayString(self):
        self.canvas.create_text(60,40,text="hi",font="twenty 10 bold underline",tags="string")

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

canvasDemo()

image.png