Method pen() in turtle module doesn't work

[valdemar1977]

Hello!
Please try this one:
from turtle import *
pen(fillcolor="black", pencolor="red", pensize=10)
penstate=pen()
In my case has an error:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/var/containers/Bundle/Application/9D07BD4B-E07D-4F71-A023-DC2C01FD095F/Pythonista3.app/Frameworks/Py3Kit.framework/pylib/site-packages/turtle.py", line 1203, in pen
pen.update(pen_dict)
NameError: name 'pen_dict' is not defined

[zrzka]

Confirmed. There's a typo - arg name is pendict, but there's pen_dict in code in the turtle module (line 1203).

[valdemar1977]

Any chance to edit locked file?

[omz]

@valdemar1977 You cannot edit standard library modules directly, but you could create a modified copy in site-packages (under Python Modules), and it would take precedence over the built-in module when you import turtle.

[cclauss]

from turtle import *
pen(fillcolor="black", pencolor="red", pensize=10)
pen_dict = pendict  # does this complete hack work?!?
penstate=pen()

[dgelessus]

@cclauss No, because of the star import. You need to set the pen_dict attribute of the turtle module, so that the turtle functions see it as a global variable. This should work:

import turtle
turtle.pen_dict = turtle.pendict
from turtle import *
pen(fillcolor="black", pencolor="red", pensize=10)
penstate=pen()

[PatoNegro]

I found the same bug this week and posted a detailed comment on the Pythonista forum:
https://forum.omz-software.com/topic/5030/bug-turtle-py