IDLE tries to run shell window if line is completed with F5 rather than Enter

[cuulblu]

BPO	14997
Nosy	@terryjreedy, @ned-deily, @serwy, @asvetlov
Files	python_error.jpg: .jpg of error issue14997.patch

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2012-10-04.19:53:42.874>
created_at = <Date 2012-06-04.01:30:07.580>
labels = ['expert-IDLE', 'type-bug']
title = 'IDLE tries to run shell window if line is completed with F5 rather than Enter'
updated_at = <Date 2012-10-04.19:53:42.873>
user = 'https://bugs.python.org/cuulblu'

bugs.python.org fields:

activity = <Date 2012-10-04.19:53:42.873>
actor = 'asvetlov'
assignee = 'none'
closed = True
closed_date = <Date 2012-10-04.19:53:42.874>
closer = 'asvetlov'
components = ['IDLE']
creation = <Date 2012-06-04.01:30:07.580>
creator = 'cuulblu'
dependencies = []
files = ['25813', '25833']
hgrepos = []
issue_num = 14997
keywords = ['patch']
message_count = 10.0
messages = ['162246', '162256', '162277', '162294', '162351', '162358', '162360', '171990', '171991', '171992']
nosy_count = 7.0
nosy_names = ['terry.reedy', 'ned.deily', 'roger.serwy', 'asvetlov', 'python-dev', 'Ramchandra Apte', 'cuulblu']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue14997'
versions = ['Python 2.7', 'Python 3.2', 'Python 3.3']

[cuulblu]

When using Idle any code I attempt to test I get a syntax error in the version number of the software. Please see the attached image. I have python installed on three machines and get the same error on all three.
All three machines are Windows 7, 64 bit. Two have Intel CPU's. One is an AMD. I have tried reinstalling. Same results.

[RamchandraApte]

Can you please run IDLE from the cmd line and send the output of it in the cmd line.

[cuulblu]

"Can you please run IDLE from the cmd line and send the output of it in the cmd line."

How do I do that?

[ned-deily]

Try launching Python 2.7 -> Python (command line), then in the interactive interpreter enter:

    import idlelib.PyShell
    idlelib.PyShell.main()

Additional error messages may show up in the command line window. But also try renaming or deleting the .idlerc folder in your User folder. You may have an IDLE configuration file with an unexpected value.

[cuulblu]

Ned

I entered the commands you gave in the Python (command line). When Idle then opened I put test code in and am still getting the same error message. I deleted the idlerc folder. I am still getting the same error message.

To expand on the problem, I get the error message when hitting the F5 key. If I hit Enter, instead of going to a new line it runs the code, but does not produce an error message. I get the same results on all three machines mentioned in my original post. I have also installed on an older XP machine, which produces the same results. It really makes no sense to me how 4 computers can all have the same issue. (Wanders off looking for the nearest wall) I downloaded the software from this website. I have tried both 32 bit and 64 bit versions. Currently the 64 bit versions are installed on the 64 bit machines. I hope to find a solution for this soon as I am getting behind on homework.

[ned-deily]

Thanks for the additional information; it's now clear what's going on. IDLE has two kinds of windows where code can be entered. When you launch IDLE, by default it opens with its shell window. This window is similar to running the Python interpreter in interactive mode, i.e. you can type in lines of Python code that are immediately executed and whose results are displayed. The other kind of window is an IDLE editor window in which you can edit a file containing Python code (either a new file or by opening an existing file). When you are ready to run the code in the selected editor window (there may be multiple ones open), you either use the Run menu command or its accelerator shortcut, F5. The results of running the file are also displayed in the IDLE shell window.

What seems to be happening here is that, if are you in the shell window and enter some text and press F5 rather than return/enter to complete the line, IDLE mistakenly treats the shell window as if it were an editor window and prompts you to save and then tries to run the contents of the shell window. It shouldn't let you do that. Thanks for bringing that error to our attention!

[serwy]

The ScriptBinding extension is enabled for the shell. If the shell is in a modified state, then pressing F5 will bring up the save dialog (or auto-save), and then perform a syntax check. This is what cuublu experienced.

Attached is a patch against 3.3a4 to disable ScriptBinding in the shell window. The patch is identical for 2.7 branch.

[python-dev]

New changeset f6aaac839d83 by Andrew Svetlov in branch '3.2':
Issue bpo-14997: disable <F5> in idle shell window.
http://hg.python.org/cpython/rev/f6aaac839d83

[python-dev]

New changeset 52ef53398096 by Andrew Svetlov in branch '3.3':
Merge: Issue bpo-14997: disable <F5> in idle shell window.
http://hg.python.org/cpython/rev/52ef53398096

New changeset a40981be184d by Andrew Svetlov in branch 'default':
Merge: Issue bpo-14997: disable <F5> in idle shell window.
http://hg.python.org/cpython/rev/a40981be184d

New changeset 06772ba3d001 by Andrew Svetlov in branch '2.7':
Issue bpo-14997: disable <F5> in idle shell window.
http://hg.python.org/cpython/rev/06772ba3d001

[asvetlov]

Fixed. Thanks to Roger Serwy.