New submission from Vincent <inqu...@intoreflection.co>:
canvas.bbox() should return a tuple containing values whether an item is hidden
or not. canvax.coords() does return a tuple when an item is hidden.
Steps to reproduce:
```
from tkinter import *
root = Tk()
canvas = Canvas(root)
id1 = canvas.create_line(10,5,20,5, tags='tunnel')
id2 = canvas.create_line(10,8,20,8, tags='tunnel')
canvas.bbox('tunnel') # return a tupple
canvas.itemconfig('tunnel', state='hidden')
canvas.bbox('tunnel') # return nothing not even None
```
I need bbox to return a tuple containing values. The consequences is that the
code must make the items temporarily visible before it can invoke the bbox
function. This turning on and off creates flashing items in my program.
Thanks in advance!
----------
components: Tkinter
messages: 388432
nosy: Vincent
priority: normal
severity: normal
status: open
title: canvas.bbox returns None on 'hidden' items while coords doesn't
versions: Python 3.7
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue43462>
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