1、函数

                  （1）定义：

                       

              

              

            （2）函数调用

             

               

              （3）函数的参数传递

               

                  

                

             

             

               参数传递的两种方式：函数调用时，参数可以按照位置或名称的方式传递

             

            （4）函数的返回值

            

                   

             (5)局部变量和全局变量

             

              

              

             

              

            

             

            

                （6）lambda函数

                

            

             

                   2、实例：七段数码管的绘制

                    

             

              

                

                 

                  

                

               

1 import turtle 2 def drawLine(draw): 3     turtle.pendown() if draw else turtle.penup() 4     turtle.fd(40) 5     turtle.right(90) 6 def drawDigit(digit): 7     drawLine(True) if digit in [2,3,4,5,6,8,9] else drawLine(False) 8     drawLine(True) if digit in [0,1,3,4,5,6,7,8,9] else drawLine(False) 9     drawLine(True) if digit in [0,2,3,5,6,8,9] else drawLine(False)10     drawLine(True) if digit in [0,2,6,8] else drawLine(False)11     turtle.left(90)12     drawLine(True) if digit in [0,4,5,6,8,9] else drawLine(False)13     drawLine(True) if digit in [0,2,3,5,6,7,8,9] else drawLine(False)14     drawLine(True) if digit in [0,1,2,3,4,7,8,9] else drawLine(False)15     turtle.left(180)16     turtle.penup()17     turtle.fd(20)18 def drawDate(date):19     for i in date :20         drawDigit(eval(i))21 def main():22     turtle.setup(800,350,200,200)23     turtle.penup()24     turtle.fd(-300)25     turtle.pensize(5)26     drawDate('20181010')27     turtle.hideturtle()28     turtle.done()29 main()

              运行结果：

                 

          

                            

                     

                    

                   

             

             

1 import turtle,time 2 def drawGap(): 3     turtle.penup() 4     turtle.fd(5) 5 def drawLine(draw): 6     drawGap() 7     turtle.pendown() if draw else turtle.penup() 8     turtle.fd(40) 9     drawGap()10     turtle.right(90)11 def drawDigit(digit):12     drawLine(True) if digit in [2,3,4,5,6,8,9] else drawLine(False)13     drawLine(True) if digit in [0,1,3,4,5,6,7,8,9] else drawLine(False)14     drawLine(True) if digit in [0,2,3,5,6,8,9] else drawLine(False)15     drawLine(True) if digit in [0,2,6,8] else drawLine(False)16     turtle.left(90)17     drawLine(True) if digit in [0,4,5,6,8,9] else drawLine(False)18     drawLine(True) if digit in [0,2,3,5,6,7,8,9] else drawLine(False)19     drawLine(True) if digit in [0,1,2,3,4,7,8,9] else drawLine(False)20     turtle.left(180)21     turtle.penup()22     turtle.fd(20)23 def drawDate(date):24     turtle.pencolor("red")25     for i in date :26         if i == '-':27             turtle.write("年",font=("Arial", 18, "normal"))28             turtle.pencolor("green")29             turtle.fd(40)30         elif i == '=':31             turtle.write("月",font=("Arial", 18, "normal"))32         elif i == '+':33             turtle.write("日",font=("Arial", 18, "normal"))34         else:35             drawDigit(eval(i))36 def main():37     turtle.setup(800,350,200,200)38     turtle.penup()39     turtle.fd(-300)40     turtle.pensize(5)41     drawDate(time.strftime("%Y-%m=%d+",time.gmtime()))42     #drawDate('20181010')43     turtle.hideturtle()44     turtle.done()45 main()

               运行结果：（不知道问题出在哪里了）