[Edu-sig] odd drawing problem with turtle.py

[Vern Ceder]

kirby urner wrote:
> I don't see where you've defined a Turtle class to instantiate sir.

The Turtle class is part of the turtle library, so that's not an issue.

> On Sun, Jan 31, 2010 at 4:27 PM, Brian Blais <bblais at bryant.edu> wrote:
>> I'm on Python 2.5, but using the updated turtle.py Version 1.0.1 - 24. 9.
>> 2009.  The following script draws 5 circles, which it is supposed to, but
>> then doesn't draw the second turtle which is supposed to simply move
>> forward.  Any ideas?

You mean you just want a turtle, but no line? If so, does instantiating 
T with T = Turtle(visible=True) help?

Cheers,
Vern

>> from turtle import *
>> from numpy.random import randint
>> resetscreen()
>> class Circle(object):
>>     def __init__(self,x,y,r,color):
>>         self.x=x
>>         self.y=y
>>         self.r=r
>>         self.color=color
>>
>>         self.turtle=Turtle(visible=False)
>>         self.turtle.tracer(False)
>>         self.draw()
>>
>>     def draw(self):
>>         self.turtle.penup()
>>         self.turtle.setposition(self.x,self.y)
>>         self.turtle.setheading(0)
>>         self.turtle.backward(self.r)
>>         self.turtle.pendown()
>>         self.turtle.fill(True)
>>         self.turtle.pencolor("black")
>>         self.turtle.fillcolor(self.color)
>>         self.turtle.circle(self.r)
>>         self.turtle.fill(False)
>>         self.turtle.penup()
>>
>> for i in range(5):
>>     c=Circle(randint(-350,350),randint(-250,250),10,"red")
>>
>>
>> T=Turtle()
>> T.forward(100)
>> T.forward(100)
>>
>>
>>
>>
>>
>>
>>
>> thanks,
>>
>> bb
>> --
>> Brian Blais
>> bblais at bryant.edu
>> http://web.bryant.edu/~bblais
>> http://bblais.blogspot.com/
>>
>>
>>
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>>
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-- 
This time for sure!
    -Bullwinkle J. Moose
-----------------------------
Vern Ceder, Director of Technology
Canterbury School, 3210 Smith Road, Ft Wayne, IN 46804
vceder at canterburyschool.org; 260-436-0746; FAX: 260-436-5137

The Quick Python Book, 2nd Ed - http://bit.ly/bRsWDW