On 11/3/2017 12:49 AM, Irv Kalb wrote:
Hi Terry,
Thanks for your message.
On Nov 2, 2017, at 5:24 PM, Terry Reedy <tjre...@udel.edu
<mailto:tjre...@udel.edu>> wrote:
On 11/2/2017 7:20 PM, Irv Kalb wrote:
I use IDLE when teaching classes, and I use it to develop small
programs for my lessons. I have found a bug that has been in IDLE
for a while, and I finally got frustrated enough with it to write.
I am running on a Mac using IDLE version 3.6.1:
Python 3.6.1 (v3.6.1:69c0db5050, Mar 21 2017, 01:21:04)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
From the date, this appears to be the binary from python.org
<http://python.org>.
Yes, I am using an absolutely standard download from python.org
<http://python.org>. No modifications at all.
Did you upgrade tcl/tk as specified at
https://www.python.org/download/mac/tcltk/ ?
No, I have not. I had no idea that I needed to do this. I just took a
look at that page, and it does suggest that I need to upgrade.
What Tk version is shown by Help => About IDLE?
It says Tk version: 8.5.15
I am a bit surprised that you are having a problem with that. 8.5.9 is
the really awful version.
running Max OS X 10.12.6 - but I also see this same problem when I am
in class running Windows 10, with Python 3.6.???
I use Windows 10 and I cannot reproduce the problem you report with
any of 2.7.14, 3.6.3, or 3.7.0a2. I used
if a:
if b:
if c:
d
d
f
for testing. Please post a sample text that fails on Windows 10. If
you want, do what I would do and insert it into the following code.
Unfortunately, I won't be able to do that until next week when I am back
at the school. I will try to remember to do that then.
import tkinter as tk
root = tk.Tk()
text = tk.Text(root)
sample = '''
<replace this with sample that allows reported error>
'''
text.insert('1.0', sample)
text.pack()
root.mainloop()
Then run and click in the resulting Text window and see if the
behavior is the same or different. Mouse clicks in the text area of
an editor window are primarily handled by tk, not IDLE or even
tkinter. Without running this control experiment, there is no reason
to blame IDLE.
I just tried your test on my Mac with the following:
import tkinter as tk
root = tk.Tk()
text = tk.Text(root)
sample = '''
if x:
y = 1
'''
text.insert('1.0', sample)
text.pack()
root.mainloop()
I run it, it brings up a widow with the two lines, and the same problem
occurs there.
Then this is either a tkinter or tk issue, most like the latter. But
this behavior is so annoying that I would expect to have seen a report
before if it were widespread.
> One thing to point out, I always use the Tab key to indent my lines.
However, even if I type many space characters to indent, I see the
same (incorrect behavior).
Unless you have a particular undocumented entry in
<HOME>/.idlerc/config-main.cfg, tabs are converted to spaces (default
4) before insertion into the text widget. If the <- and -> arrow keys
always move one character, you have spaces.
I have not changed any configuration like this.
If I have an indented line, and I click just to the left of the first
real character on that line, often IDLE will place the insertion
cursor at the wrong place - at one character to the right of the left
edge of the window. If I click in the same spot (Just to the left of
the first real character on the line), IDLE responds by moving the
insertion cursor one space to the right. Depending on how many times
the line I'm clicking on has been indented, IDLE eventually
highlights a section from the last character of the previous line to
just before the first real character of the line where I clicked. If
I click one more time, IDLE puts the insertion character in the
correct place.
For me, a sinple click places the the cursor on the nearest
between-character slice line, either to the left or right of where I
click. Two clicks that are rapid enough to be interpreted as a double
click select a word or non-word slice. Similarly, clicks with the bar
overlapping two lines are pushed to the 'closer' line, either up or down.
Sounds like I need to upgrade TCL. Following the links on the page you
provided, it looks like I need to download ActiveTCL, with the newest
version being 8.6.6 from ActiveState.com <http://ActiveState.com>.
Does that sound right?
No, our 3.6 Mac binary is compiled against 8.5 and will not work with
8.6. The page says 8.5.18. Try that. If there is still a problem, one
of us should open an issue on the tracker and make sure that the Mac and
tkinter experts are nosy. it. The exact OSX version would be needed.
(Are you the IrvKalb already registered?)
How would the average person (who doesn't follow links on forums like
this and get expert help from someone like you) know to do this???
Some people see the following line on the download page
macOS users: There is important information about IDLE, Tkinter, and
Tcl/Tk on macOS here.
and click the link. Others miss it and ask various places. Or they
take classes that use pre-loaded machines or walk students through
installation on their own machines. Or maybe they blame IDLE for the tk
bugs and stop trying to use it.
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