python学习---第二周作业

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

#01 温度转换
while True:
    val = input("请输入带温度表示符号的温度值(例如：32C)： ")
    if val[-1] in ['C','c']:
        f = 1.8 * float(val[0:-1]) + 32
        print("转换后的温度为： %.2fF" % f)
        break
    elif val[-1] in ['F','f']:
        c = (float(val[0:-1]) - 32) / 1.8
        print("转换后的温度为： %.2fC" % c)
        break
    else:
        print("输入有误")
        continue

#02 蟒蛇小程序
from turtle import *
import turtle
def drawSnake(rad, angle, len, neckrad):
    for i in range(len):
        turtle.circle(rad, angle)
        turtle.circle(-rad, angle)
    turtle.circle(rad, angle/2)
    turtle.fd(rad)
    turtle.circle(neckrad+1, 180)
    turtle.fd(rad*2/3)

def main():
    turtle.setup(1360,768,0,0)
    pythonsize = 10
    turtle.pensize(pythonsize)
    turtle.pencolor("#3B9909")
    turtle.seth(-40)
    drawSnake(40,80,5,pythonsize/2)
    done()

main()

#03 使用turtle库中turtle.fd()函数和turtle.seth()函数绘制一个等边三角形
import turtle

def main():
    turtle.setup(1360,768,0,0)
    pythonsize = 1
    turtle.pensize(pythonsize)
    turtle.pencolor("#3B9909")
    turtle.seth(0)
    turtle.fd(80)
    turtle.seth(120)
    turtle.fd(80)
    turtle.seth(-120)
    turtle.fd(80)
    turtle.done()

main()