print('hello')

print('world')

a='90'

b='80'

c=int(a)

d=int(b)

print(c+d)

a=5

b=2

a-=b

print(a)

turtle.fillcolor('red')

turtle.color('green')

turtle.pencolor('blue')

turtle.color('yellow')

1.查看电脑的操作系统

2.找到对应的python版本

3.下载IDLE

4.下载turtle库

1.turtle.pencolor("red")

2.import turtle

3.turtle.pensize(5)

4.turtle.circle(50)

import turtle

turtle.penup()

turtle.goto(-50,0)

turtle.pendown()

turtle.forward(100)

turtle.right(90)

turtle.forward(100)

turtle.done()