Mailman 3 February 2010 - Tkinter-discuss

ANN: PyUseCase 3.2 - GUI testing for Tkinter (and PyGTK)
by Geoff Bache Feb. 26, 2010

Feb. 26, 2010

Hi all, Thought I'd announce that I've finally released my GUI testing effort for Tkinter. (If you don't want announcements here, please let me know and I'll desist.) As you'll gather if you read my previous postings I've been trying to get Tkinter support into PyUseCase (which has been a PyGTK-only tool up until now) and I've now made a release of my efforts, available from sourceforge (link below). At this point Tkinter support is fairly basic and doesn't come close to covering the widget set, but it's working on a couple of different "real-life" (but smallish) applications. The widgets it will currently handle interaction with are Button, Entry, Label, Menu, Tk, Toplevel and tkMessageBox. Adding support for further widgets shouldn't be too hard. If anyone's interested in trying to move this forward, I'd be interested to here from you - I'm very happy to help people get started. Regards, Geoff Bache A bit more detail: PyUseCase is an unconventional GUI testing tool for PyGTK and Tkinter, along with a framework for testing Python GUIs in general. Instead of recording GUI mechanics directly, it asks the user for descriptive names and hence builds up a "domain language" along with a "UI map file" that translates this language into actions on the current GUI widgets. The point is to reduce coupling, allow very expressive tests, and ensure that GUI changes mean changing the UI map file but not all the tests. Instead of an "assertion" mechanism, it auto-generates a log of the GUI appearance and changes to it. The point is then to use that as a baseline for text-based testing, using e.g. TextTest. It also includes support for instrumenting code so that "waits" can be recorded, making it far easier for a tester to record correctly synchronized tests without having to explicitly plan for this. Homepage: http://www.texttest.org/index.php?page=ui_testing Download: http://sourceforge.net/projects/pyusecase Mailing list: https://lists.sourceforge.net/lists/listinfo/pyusecase-users (new) Bugs: https://bugs.launchpad.net/pyusecase/ Source: https://code.launchpad.net/pyusecase/

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Kind of the old intercept the Entry() tab key question
by Bob Greschke Feb. 25, 2010

Feb. 25, 2010

I know this must have been handled before (but I can find no evidence of it), but what I want to do is have an entry field for filespecs (path+filename) that is on the same 'form' with other entry fields and I want the user to be able to use the Tab key to get to the field (so takefocus needs to be 1). When the field has the focus if what is in the field (i.e. the StringVar) does not match any filename (or path) when the Tab key is pressed I just want the program to beep and the cursor to stay in the field. If what is in there can be completed to match a filename (or path) then the contents gets completed when the Tab is pressed and the cursor stays in the field. If what is in the field already matches a filename (or path) then the Tab key press goes on to the next field as it usually would for other Entry fields. Is this possible? At this point I'm still not having much luck just getting the cursor to stay put after a Tab press, and using return "break" in the <Tab> handler doesn't seem to be doing anything (I've only ever gotten the "break" thing to work once a long time ago, but then didn't use it, and I can't remember how I got it to work). Thanks! Bob

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TkAqua issue: are threaded Python applications still possible on OS X?
by sarah.nason＠utoronto.ca Feb. 25, 2010

Feb. 25, 2010

Hallo, For the last few weeks, I've been trying to fix a problem with the OS X port of a program I'm working on, PyGraphics; since I've had no luck, I'm here in search of your expertise. PyGraphics is a multithreaded module designed to be imported into and used in computer science students' programs. It works fine on Windows and Linux, and it used to function on OS X, too - but the release of Snow Leopard put an end to that. TkAqua does not permit mainloop() to be run on background threads, and since Wing (the IDE of choice for my university) is running the application, all threads related to PyGraphics are background threads by definition. Has anyone found any workarounds for this problem? I've looked into TkX11, and have recompiled Tcl/Tk with the --disable-aqua and --with-x configuration options, but that didn't help. There is a suggestion that the version of Python that ships with Snow Leopard doesn't play well with that version of Tk, but I've not found much documentation to confirm or deny that possibility. Right now, the most viable option appears to be rewriting the program to offer an unthreaded version to Mac students, but that's just sad. Any ideas? Thanks in advance! -- Sarah Nason

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TkAqua issue: are threaded Python applications still possible on OS X?
by sarah.nason＠utoronto.ca Feb. 24, 2010

Feb. 24, 2010

Hallo, For the last few weeks, I've been trying to fix a problem with the OS X port of a program I'm working on, PyGraphics; since I've had no luck, I'm here in search of your expertise. PyGraphics is a multithreaded module designed to be imported into and used in computer science students' programs. It works fine on Windows and Linux, and it used to function on OS X, too - but the release of Snow Leopard put an end to that. TkAqua does not permit mainloop() to be run on background threads, and since Wing (the IDE of choice for my university) is running the application, all threads related to PyGraphics are background threads by definition. Has anyone found any workarounds for this problem? I've looked into TkX11, and have recompiled Tcl/Tk with the --disable-aqua and --with-x configuration options, but that didn't help. There is a suggestion that the version of Python that ships with Snow Leopard doesn't play well with that version of Tk, but I've not found much documentation to confirm or deny that possibility. Right now, the most viable option appears to be rewriting the program to offer an unthreaded version to Mac students, but that's just sad. Any ideas? Thanks in advance! -- Sarah Nason

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How to configure the non-default Python version to work with tk
by Noelia Oses Feb. 17, 2010

Feb. 17, 2010

Hi all, I have a very newby question. I'm using a computer with Ubuntu Karmic Koala. The Ubuntu has python 2.6 installed by default, and this default installation includes tkinter. However, I'm using a platform (NuPIC) that needs Python 2.5. This I had to install manually in /usr/local. Unfortunately, the manually installed version that I need doesn't seem to be able to find the tkinter libraries. I have tried with "sudo apt-get install python2.5-tk" but it doesn't install it as it notices there is a newer version already. The error message that I get is: noses@PCF-191-0907l:~/NuPIC/current/share/projects/bitworm$ python DisplayReport.py Traceback (most recent call last): File "DisplayReport.py", line 18, in <module> from pylab import * File "/home/noses/NuPIC/current/lib/python2.5/site-packages/pylab.py", line 1, in <module> from matplotlib.pylab import * File "/home/noses/NuPIC/current/lib/python2.5/site-packages/matplotlib/pylab.py", line 253, in <module> from matplotlib.pyplot import * File "/home/noses/NuPIC/current/lib/python2.5/site-packages/matplotlib/pyplot.py", line 75, in <module> new_figure_manager, draw_if_interactive, show = pylab_setup() File "/home/noses/NuPIC/current/lib/python2.5/site-packages/matplotlib/backends/__init__.py", line 25, in pylab_setup globals(),locals(),[backend_name]) File "/home/noses/NuPIC/current/lib/python2.5/site-packages/matplotlib/backends/backend_tkagg.py", line 7, in <module> import Tkinter as Tk, FileDialog File "/usr/local/lib/python2.5/lib-tk/Tkinter.py", line 38, in <module> import _tkinter # If this fails your Python may not be configured for Tk ImportError: No module named _tkinter Any help figuring this out is very much appreciated!! Best regards, Noelia

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Re: [Tkinter-discuss] Exiting a Tkinter Program-- An Anomaly or two
by Wayne Watson Feb. 13, 2010

Feb. 13, 2010

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Re: [Tkinter-discuss] Exiting a Tkinter Program-- An Anomaly or two
by Wayne Watson Feb. 11, 2010

Feb. 11, 2010

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Exiting a Tkinter Program-- An Anomaly or two
by Wayne Watson Feb. 11, 2010

Feb. 11, 2010

I'm looking a 1800+ line someone else wrote. It uses one large dialog for menus, and has a large area for images. A few menus open small dialogs, for example, to enter a file name. The File menu has an exit choice. The only other exit is the x in the upper right corner of the large dialog. I'm pretty sure that menu is coded to quit via a short def in the program. def Quit(self) self.running = False self.master.quit() I see no other code to quit. If I use Exit(menu item), the program does not quit. If I then use the x, it quits and the shell script is left open for a command. Any ideas why Quit doesn't work in the first case? It's accessible via a self.mainMenu.add_command(.. command=self.Quit) I had not turned the program loose by using a menu or touching any controls. If I cause the program to print to the shell, and then use x to exit that it hangs the shell. Why? When I x the shell, it tells me the prog is running." Do I want to kill it?" Yes, kills the shell window. The above seems abnormal to me. Comments? -- "Crime is way down. War is declining. And that's far from the good news." -- Steven Pinker (and other sources) Why is this true, but yet the media says otherwise? The media knows very well how to manipulate us (see limbic, emotion, $$). -- WTW

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menu bug
by Nemes Andrei Feb. 9, 2010

Feb. 9, 2010

Hi! I am trying to make a menu that uses small icons as well as text, but when I open the main menu, the icon in the pull down menu is not correctly displayed until I hoover over it. Could someone please be so kind to tell me what's wrong and how can I solve this. Image with error attached (or viewable at http://img11.imageshack.us/img11/9429/bugft.jpg) Thank you. menu code: #building icon set self.info=PhotoImage(file="gui/information.gif") #menu init self.myMenu=Menu(self) #help menu self.menu_help=Menu(self.myMenu, tearoff=0) self.menu_help.add_command(label="Credits ", command=mda) self.menu_help.add_command(label="About "+name, image=self.info, compound="left", command=mda) self.myMenu.add_cascade(label="Help", menu=self.menu_help) #show menu bar self.config(menu=self.myMenu) Kind regards, Andrei Nemes

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Swapping 2 widgets btween 2 cells in a grid-layout
by GKalman Feb. 3, 2010

Feb. 3, 2010

I would like to swap the (grid cell) positions of 2 label-widgets (in an array of widgets) in response to a mouse-event. (I have no trouble swapping variables, but can't do it with widgets). Any suggestions or references would be appreciated. -- View this message in context: http://old.nabble.com/Swapping-2-widgets-btween-2-cells-in-a-grid-layout-tp… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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