Python语言程序设计基础（2）—— Python程序实例解析

温度转换

def tempConvert(ValueStr):
    if ValueStr[-1] in ['F','f']:
        ans = (eval(ValueStr[0:-1]) - 32)/1.8
        print("{:.2f}C".format(ans))
    elif ValueStr[-1]=='C' or ValueStr[-1]=='c':
        ans = 1.8*eval(ValueStr[0:-1]) + 32
        print("{:.2f}F".format(ans))
    else:
        print("格式错误")

str = input()
tempConvert(str)

画蟒蛇

import turtle

def drawSnake(radius,angle,length):
    turtle.seth(-angle/2)
    for i in range(length):
        turtle.circle(radius,angle)
        turtle.circle(-radius,angle)
    turtle.circle(radius,angle/2)
    turtle.fd(40)
    turtle.circle(16,180)
    turtle.fd(40*2/3)
turtle.setup(0.5,0.5)
turtle.penup()
turtle.fd(-250)
turtle.pendown()
turtle.pensize(25)
turtle.pencolor("purple")
drawSnake(40,120,4)
turtle.done()

习题部分