python学习（五）
Tkinter的学习
1.编写简单的计算器
1 #coding:utf-8 2 3 from Tkinter import * 4 5 class App: 6 def __init__(self, root): 7 frame = Frame(root) 8 frame.pack() 9 self.frame = frame 10 11 lab = Label(frame, text = u"简单计算器") 12 lab.pack() 13 14 self.new_input() 15 16 //注意传参的方法 17 btn1 = Button(frame, text = "1", fg = "green", command = lambda : self.buttoncb(1)) 18 btn2 = Button(frame, text = "2", fg = "green", command = lambda : self.buttoncb(2)) 19 btn3 = Button(frame, text = "3", fg = "green", command = lambda : self.buttoncb(3)) 20 btn4 = Button(frame, text = "4", fg = "green", command = lambda : self.buttoncb(4)) 21 btn5 = Button(frame, text = "5", fg = "green", command = lambda : self.buttoncb(5)) 22 btn6 = Button(frame, text = "6", fg = "green", command = lambda : self.buttoncb(6)) 23 btn7 = Button(frame, text = "7", fg = "green", command = lambda : self.buttoncb(7)) 24 btn8 = Button(frame, text = "8", fg = "green", command = lambda : self.buttoncb(8)) 25 btn9 = Button(frame, text = "9", fg = "green", command = lambda : self.buttoncb(9)) 26 btn0 = Button(frame, text = "0", fg = "green", command = lambda : self.buttoncb(0)) 27 btnadd = Button(frame, text = "+", fg = "green", command = lambda:self.buttoncb('+')) 28 btnsub = Button(frame, text = "-", fg = "green", command = lambda:self.buttoncb('-')) 29 btnchen = Button(frame, text = "*", fg = "green", command = lambda:self.buttoncb('*')) 30 btndiv = Button(frame, text = "%", fg = "green", command = lambda:self.buttoncb('%')) 31 btnque = Button(frame, text = "=", fg = "green", command = self.cal) 32 33 btn1.pack() 34 btn2.pack() 35 btn3.pack() 36 btn4.pack() 37 btn5.pack() 38 btn6.pack() 39 btn7.pack() 40 btn8.pack() 41 btn9.pack() 42 btn0.pack() 43 btnadd.pack() 44 btnsub.pack() 45 btnchen.pack() 46 btndiv.pack() 47 btnque.pack() 48 49 button = Button(frame, text = "Quit",fg = "blue", command = root.quit) 50 button.pack(side = BOTTOM) 51 52 def new_input(self): 53 v = StringVar() 54 e = Entry(self.frame, textvariable = v) 55 #v.set("") 56 self.v = v 57 e.pack() 58 59 def buttoncb(self, i): 60 #print "button." 61 val = self.v.get() 62 self.v.set(val + str(i)) 63 64 65 def cal(self): 66 val = self.v.get() 67 val1 = eval(val) 68 self.v.set(val1) 69 70 root = Tk() 71 a = App(root) 72 #a.new_input() 73 root.mainloop()
2.编写计时器
1 #coding:utf-8 2 import Tkinter as tk 3 import time 4 5 class App(): 6 def __init__(self): 7 self.root = tk.Tk() 8 self.label = tk.Label(text="计时器", fg = "red") 9 self.label.pack() 10 self.update_clock() 11 self.root.mainloop() 12 13 def update_clock(self): 14 now = time.strftime("%H:%M:%S") 15 self.label.configure(text = now) 16 self.root.after(1000, self.update_clock) 17 18 app = App()
