画多个同心圆
import turtle
my_colors=('red','green','yellow','blue','black')
t=turtle.Pen()
for i in range(5):
t.penup()
t.goto(0,-i*10)
t.pendown()
t.color(my_colors[i%len(my_colors)])
t.circle(15+i*10)
'''t.goto(0,0)
t.circle(100)
t.goto(0,-100)
t.circle(200)
t.goto(0,-200)
t.circle(300)'''
turtle.done()
画棋盘
import turtle
t=turtle.Pen()
temp=input('输入你想画的X*X的棋盘')
X=int (temp)
for i in range(X+1):
t.penup()
t.goto(0,i*10)
t.pendown()
t.goto(X*10,i*10 )
for i in range(X+1):
t.penup()
t.goto(i*10,0)
t.pendown()
t.goto(i*10, X*10)
turtle.done()