Question

下面是一段python代码，为什么一运行就提示TypeError: bad operand type for abs(): 'type'的错误

import turtle

def drawsnake(rad, angle, len, neckrad):
for i in range(len):
turtle.circle(rad,range)
turtle.circle(-rad,range)
turtle.circle(rad,range/2)
turtle.fd(rad)
turtle.circle(neckrad+1,180)
turtle.fd(rad*2/3)

def main():
turtle.setup(1300,800,0,0)
pythonsize=30
turtle.pensize(pythonsize)
turtle.pencolor("blue")
turtle.seth(-40)
drawsnake(40,80,5,pythonsize/2)

main()

Answer 1

      turtle.circle(rad,range)
       turtle.circle(-rad,range)
   turtle.circle(rad,range/2)

这三行不对，修改成

       turtle.circle(rad,angle)
       turtle.circle(-rad,angle)
   turtle.circle(rad,angle/2)

turtle.circle(radius, extent=None, steps=None)

Parameters:

radius – a number

extent – a number (or None)

steps – an integer (or None)

   

第二个参数是角度是一个number