[issue24759] Idle: require 8.5 / ttk

2015-08-01 Thread Serhiy Storchaka 

Serhiy Storchaka added the comment:

IMHO Tcl and Tk should be in title case (as Python or Django) or at least all 
in upper case (as APL or SDL).

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[issue24759] Idle: require 8.5 / ttk

2015-08-01 Thread Serhiy Storchaka 

Serhiy Storchaka added the comment:

I don't see any mentions of ttk in IDLE source code except added check. Is ttk 
really required for IDLE?

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[issue24759] Idle: require 8.5 / ttk

2015-08-01 Thread Terry J. Reedy 

Terry J. Reedy added the comment:

Re-opened for tweak.

This patch, to exit gracefully if ttk is not available, is the first step 
before using ttk in Idle.  Mark, a long-time tk/ttk expert and site/book 
author, has volunteered to help upgrade Idle with ttk. Please see ttk in idle 
on Idle-Sig list for general discussion and #24750 for the first substantive 
patches. The only reason I have not applied the ttk.Scrollbar patch, on that 
issue, is because Ned mentioned, on that issue, that the OS 8.5 python requires 
tcl/tk 8.4.  I strongly feel that this should not stop the use of ttk, but I an 
first doing a few non-ttk patches, including Mark's patch for #24745, before 
continuing.

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status: closed - open

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[issue24759] Idle: require 8.5 / ttk

2015-07-30 Thread Terry J. Reedy 

Terry J. Reedy added the comment:

I tested by renaming installed 3.5 ttk, editing 3.5 PyShell with 3.4, and 
clicking 3.5 icon.

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stage: needs patch - commit review

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[issue24759] Idle: require 8.5 / ttk

2015-07-30 Thread Mark Roseman 

Mark Roseman added the comment:

Sounds good. Only suggestion, given it's user facing, is to have the error 
message point them towards a solution. Off the top of my head, maybe something 
like IDLE requires Python be configured to use Tk 8.5 or newer (you have Tk 
x.x) with a title of IDLE Cannot be Started

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[issue24759] Idle: require 8.5 / ttk

2015-07-30 Thread Terry J. Reedy 

New submission from Terry J. Reedy:

PyShell currently has this code

try:
from tkinter import *
except ImportError:
print(** IDLE can't import Tkinter.\n
  Your Python may not be configured for Tk. **, file=sys.__stderr__)
sys.exit(1)
import tkinter.messagebox as tkMessageBox

When Idle is started from an icon, there is no place for the error message to 
go, so it appears than nothing happens.  But this is the best we can do without 
invoking system specific error message functions.  (This, if possible, would be 
another issue.) The second import assumes that messagebox is available, which 
is should be without modification of the tkinter package since long ago.  But I 
think we should guard against someone trying to start Idle on pre 8.5.  The 
following seems to work nicely.  This is a prerequisite for any ttk patches.  
Any comment before I apply?

try:
from tkinter import ttk
except:
root = Tk()
root.withdraw()
tkMessageBox.showerror(Fatal Idle Import Error,
Idle cannot import required module tkinter.ttk.\n
Click OK to exit.,
parent=root)
sys.exit(1)

--
assignee: terry.reedy
messages: 247701
nosy: markroseman, terry.reedy
priority: normal
severity: normal
stage: needs patch
status: open
title: Idle: require 8.5 / ttk
type: enhancement
versions: Python 2.7, Python 3.4, Python 3.5, Python 3.6

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[issue24759] Idle: require 8.5 / ttk

2015-07-30 Thread Terry J. Reedy 

Terry J. Reedy added the comment:

Improved message.  Thanks.  Should be good enough for the extremely few times 
it should ever be triggered.

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resolution:  - fixed
stage: commit review - resolved
status: open - closed

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[issue24759] Idle: require 8.5 / ttk

2015-07-30 Thread Roundup Robot 

Roundup Robot added the comment:

New changeset 8203fc75b3d2 by Terry Jan Reedy in branch '2.7':
Issue 24759: Gracefull exit Idle if ttk import fails.
https://hg.python.org/cpython/rev/8203fc75b3d2

New changeset 13a8782a775e by Terry Jan Reedy in branch '3.4':
Issue 24759: Gracefull exit Idle if ttk import fails.
https://hg.python.org/cpython/rev/13a8782a775e

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