库的使用：turtle

>>> turtle.right(180)
>>> turtle.forward(100)
>>> turtle.circle(100)
>>> turtle.circle(50)
>>> turtle.circle
<function circle at 0x02D90B70>
>>> turtle.circle(10)
>>> turtle.fillcolor(blue)
Traceback (most recent call last):
  File "<pyshell#19>", line 1, in <module>
    turtle.fillcolor(blue)
NameError: name 'blue' is not defined
>>> turtle.fillcolor(colorsting)
Traceback (most recent call last):
  File "<pyshell#20>", line 1, in <module>
    turtle.fillcolor(colorsting)
NameError: name 'colorsting' is not defined
>>> turtle.begin fill(blue)
SyntaxError: invalid syntax
>>> turtle.circlependown()
Traceback (most recent call last):
  File "<pyshell#22>", line 1, in <module>
    turtle.circlependown()
AttributeError: module 'turtle' has no attribute 'circlependown'
>>> turtle.pendown()
>>> turtle.circle(100,step=6)
Traceback (most recent call last):
  File "<pyshell#24>", line 1, in <module>
    turtle.circle(100,step=6)
TypeError: circle() got an unexpected keyword argument 'step'
>>> turtle.circle(100,steps=6)
>>> rurtle.left(100)
Traceback (most recent call last):
  File "<pyshell#26>", line 1, in <module>
    rurtle.left(100)
NameError: name 'rurtle' is not defined
>>> turtle.left(100)
>>> turtle.left(80)
>>> turtle.circle(100,steps=6)
>>>