《Python语言程序设计基础》第二版嵩天第二章程序练习题答案

《Python语⾔程序设计基础》第⼆版嵩天第⼆章程序练习题答案2.1#TempConvertdefTempConvert(value):iftempstr[-1]in['F','f']:c=(eval(tempstr[0:-1])-32)/1.8print("Thetemperatureisconvertedto{}C".format(int(c)))eliftempstr[-1]in['C','c']:f=eval(tempstr[0:-1])*1.8+32print("Thetemperatureisconvertedto{}F".format(int(f)))else:print("Inputwrong!")tempstr=input("plsinputthetemperaturewithunitForC:")whiletempstr[-1]notin['N','n']:TempConvert(tempstr)tempstr=input("plsinputthetemperaturewithunitForC:")2.2汇率兑换程序whileTrue:try:s=input('输⼊⾦额以¥或$结尾,输⼊E结束:')mode=s[-1]ifmode=='E':breakelifmode=='$':print(str(6*int(s[:-1]))+'¥')else:print(str(round(int(s[:-1])/6,2))+'$')except:print("InputError!")2.3绘制彩⾊的蟒蛇#绘制彩⾊的蟒蛇importturtlelist=['red','black','grey','gold','purple','violet']defdrawSnake(radius,angle,length):turtle.seth(-40)foriinrange(length):turtle.pencolor(list[i%6])turtle.circle(radius,angle)turtle.pencolor(list[(i+1)%6])turtle.circle(-radius,angle)turtle.circle(radius,angle/2)turtle.fd(40)turtle.circle(16,180)turtle.fd(40*2/3)turtle.setup(650,350)turtle.penup()turtle.fd(-300)turtle.pendown()turtle.pensize(25)drawSnake(40,80,9)turtle.done()2.4等边三⾓形绘制importturtleturtle.setup(650,350,200,250)turtle.penup()turtle.fd(-200)turtle.pendown()turtle.pensize(2)turtle.pencolor('red')foriinrange(3):turtle.seth(120*i)turtle.fd(100)2.5叠加等边三⾓形绘制list=[60,180,300]foriinrange(3):turtle.seth(120*i)turtle.fd(200)turtle.penup()turtle.seth(360)turtle.fd(100)turtle.pendown()foriinlist:turtle.seth(i)turtle.fd(100)2.6⽆⾓正⽅形绘制foriinrange(1,5):turtle.fd(100)turtle.seth(90*i)turtle.penup()turtle.fd(10)turtle.pendown()2.7六⾓形的绘制foriinrange(3):turtle.seth(30+120*i)turtle.fd(180)turtle.penup()turtle.seth(360)turtle.fd(100)turtle.pendown()foriinrange(3):turtle.seth(90+120*i)turtle.fd(180)2.8正⽅形螺旋形的绘制len=40foriinrange(1,10):turtle.seth(90)turtle.fd(len)turtle.seth(0)len=len+9t