import turtle

turtle.width(10)

turtle.color("blue")  

turtle.circle(50)

turtle.penup()

turtle.goto(120,0)

turtle.pendown()

turtle.color("black")

turtle.circle(50) 

turtle.penup()

tuttle.goto(210,0)

turtle.pendown()

turtle.color("red")

turtle.circle(50)

turtle.penup()

turtle.goto(60,-50)

turtle.pendown()

turtle.color("yellow")

turtle.circle(50)

turtle.penup()

turtle.goto(160,-50)

turtle.pendown()

turtle.color("green")

turtle.circle(50)

#取消连线可以通过抬笔实现