习题2

temp = eval(input("请直接输入华氏温度值: ")) C = (temp - 32) / 1.8 print("转换后的温度是{}C".format(int(C))) temp = eval(input("请直接输入摄氏温度值: ")) F = 1.8 * temp + 32 print("转换后的温度是{}F".format(int(F)))
`
try:
while 1:
money = input("请输入要转换的金额，例子：$2/￥6 的形式，e 表示结束：")
mode = money[0]

    if mode == '$':
        val = eval(money[1:])
        trans = val * 6
        print('{}->>￥{}'.format(money, trans))
    elif mode == '￥':
        val = eval(money[1:])
        trans = val / 6
        print('{}->>${}'.format(money, trans))
    elif mode == 'e':
        break
    else:
        print("您输入的有误")

except:
print("您输入的有误")

WeightConvert.py

WeightStr = input("请输入带有符号的重量值：")

if WeightStr[-1] in ['K', 'k']:
lb = (eval(WeightStr[0:-1]) * 2.2046)
print("转换后的重量是{:.2f}磅".format(lb))
elif WeightStr[-1] in ['L', 'l']:
kg = (eval(WeightStr[0:-1]) / 2.2046)
print("转换后的重量是{:.2f}千克".format(kg))
else:
print("输入格式错误")

import turtle

def draw_snake_segment(t, length, angle, color):
"""绘制蟒蛇的一个小段"""
t.pencolor(color) # 设置画笔颜色
t.circle(length, angle) # 绘制圆弧
t.circle(-length, angle) # 绘制反向圆弧
t.circle(length, angle / 2) # 绘制更小的圆弧
t.fd(length) # 向前移动
t.circle(16, 180) # 绘制更小的圆弧
t.fd(length * 2 / 3) # 向前移动

def draw_colorful_snake():
"""绘制彩色蟒蛇"""
colors = ["red", "orange", "yellow", "green", "blue", "indigo", "violet"]
turtle.setup(650, 350, 200, 200)
turtle.penup()
turtle.fd(-250)
turtle.pendown()
turtle.pensize(25)
turtle.seth(-40)

for i in range(4):
    draw_snake_segment(turtle, 40, 80, colors[i % len(colors)])
    turtle.fd(40)

turtle.done()

from turtle import *
setup(500, 500)
fd(100)
left(120)
fd(100)
left(120)
fd(100)

from turtle import *
fd(100)
seth(-120)
fd(100)
seth(120)
fd(100)
seth(60)
fd(100)
seth(-60)
fd(200)
seth(-180)
fd(200)
seth(60)
fd(100)

from turtle import *
left(90)
length = 5
speed = 20
for i in range(30):
fd(length)
left(90)
fd(length)
left(90)
length += 5
fd(length)

import turtle

def draw_square_spiral():
# 设置画布
turtle.setup(600, 600)
turtle.speed(0) # 设置绘制速度
turtle.pensize(2) # 设置画笔粗细

# 初始位置和方向
turtle.penup()
turtle.goto(0, -200)
turtle.pendown()
turtle.seth(0)  # 设置初始方向为正东

# 绘制正方形螺旋线
for i in range(100):
    turtle.forward(40 * i)
    turtle.right(90)

# 完成绘制
turtle.hideturtle()
turtle.done()

draw_square_spiral()
`