Begin forwarded message:
> From: Hershel Millman <hers...@themillmans.net>
> Date: June 18, 2016 2:39:21 PM MST
> To: Steven D'Aprano <st...@pearwood.info>
> Subject: Re: [Tutor] Turtle
>
> Steven,
>
> I followed your instruction and typed "import turtle" into the terminal on my
> mac, and nothing happened.
>
> When I entered the following, a new window was created in which the turtle
> behaved exactly like it was supposed to.
>
> for i in range(4):
> ... turtle.right(90)
> ... turtle.forward(200)
>
> In pycharm, when I enter the following, it replies with the following error
> message:
>
> from turtle import *
>
> def drawSquare(size=100):
> turtle.pendown()
> turtle.forward(size)
> turtle.left(90)
> turtle.forward(size)
> turtle.left(90)
> turtle.forward(size)
> turtle.left(90)
> turtle.forward(size)
> turtle.left(90)
>
> drawSquare(50)
>
> input ()
>
> Traceback (most recent call last):
> File "/Users/Hershel/PycharmProjects/Project 1/practicefornotturtle.py",
> line 14, in <module>
> drawSquare(50)
> File "/Users/Hershel/PycharmProjects/Project 1/practicefornotturtle.py",
> line 4, in drawSquare
> turtle.pendown()
> NameError: global name 'turtle' is not defined
>
> Process finished with exit code 1
>
> Thank you,
>
> Hershel
>
> On Jun 18, 2016, at 2:00 AM, Steven D'Aprano wrote:
>
>> On Fri, Jun 17, 2016 at 11:25:40PM -0700, Hershel Millman wrote:
>>> Hello tutors,
>>>
>>> I have been learning basic python on my Macintosh computer and
>>> everything I have tried so far has worked, except when I tried to use
>>> the turtle module. I then used my Linux computer and the turtle module
>>> still did not work.
>>
>> What does "did not work" mean?
>>
>> Did you get an error message? Blue Screen Of Death? Computer caught
>> fire?
>>
>> I see later on that you are running PyCharm. Let's try this with the
>> default Python interpreter. Open a terminal window. You should see a
>> prompt ending with a dollar sign $ e.g. on my computer I see:
>>
>> [steve@ando ~]$
>>
>> Type the command "python" without quotes, and hit Enter. You should get
>> a message about the version of Python you are running, and a >>> prompt.
>> This is the Python interpreter. Now enter:
>>
>> import turtle
>>
>> What happens? Do you get an error?
>>
>> If not, what happens if you enter these lines?
>>
>> turtle.shape('turtle')
>> for i in range(4):
>> turtle.right(90)
>> turtle.forward(200)
>>
>> (Hit the TAB key at the beginning of the last two lines to get the
>> indent. When you have finished typing, you will need to enter one extra
>> time to have Python run the code.)
>>
>> Describe what happens. Do you get an error? If you do, copy and paste
>> the ENTIRE error message, starting with the line "Traceback".
>>
>>
>>
>>> I tried to use the command line and type "sudo dnf
>>> install turtle", "sudo pip install turtle", and it told me "no package
>>> turtle available".
>>
>> That's because turtle is part of the standard library. It's already
>> installed. If you run:
>>
>> locate turtle.py
>>
>> from your Linux or Mac OS X shell (not from Python!) you should see a
>> list of at least one turtle.py files.
>>
>>
>>> I tried to install Python-tk and python3-tk, and I
>>> was told that no packages by those names were available. I also tried
>>> reinstalling python 2 and python 3, to no avail.
>>
>> Reinstalling Python should be the *last* resort, not the first, or
>> second.
>>
>>
>>
>> --
>> Steve
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