Tkinter Entry widgets 'font' property (API ?) changed in Python 2.5.2?

[Atul]

Hi,

The snippet :

entryFontDescr = Entry()["font"]
print self.entryFontD escr

On Windows XP it displays

{MS Sans Serif} 8

On Suse Linux 10.2 it used to display

TkTextFont 10

I upgraded to OpenSuse 11 and now it shows

TkTextFont

I used this snippet to obtain the default font size for an Entry
widget. Now with an OS upgrade, my code is broken.

The python version on the upgraded box is

~python
Python 2.5.2 (r252:60911, Jun 6 2008, 23:32:27)
[GCC 4.3.1 20080507 (prerelease) [gcc-4_3-branch revision 135036]] on
linux2
Type "help", "copyright" , "credits" or "license" for more information.

>>>

I dont remember the exact version of Python on the earlier Suse 10.2
box

My questions:

1. Is this not an API change ? I looked up Python's release
documentation and didn't find any mention of the same.
2. How can I achieve what I want alternatively ?

Regards,
-- Atul

[Eric Brunel]

Re: Tkinter Entry widgets 'font' property (API ?) changed in Python 2.5.2 ?

On Wed, 06 Aug 2008 06:01:59 +0200, Atul <atul.nene@gmai l.comwrote:

Hi,
>
The snippet :
>
entryFontDescr = Entry()["font"]
print self.entryFontD escr
>
On Windows XP it displays
>
{MS Sans Serif} 8
>
On Suse Linux 10.2 it used to display
>
TkTextFont 10
>
I upgraded to OpenSuse 11 and now it shows
>
TkTextFont
>
I used this snippet to obtain the default font size for an Entry
widget. Now with an OS upgrade, my code is broken.
>
The python version on the upgraded box is
>
~python
Python 2.5.2 (r252:60911, Jun 6 2008, 23:32:27)
[GCC 4.3.1 20080507 (prerelease) [gcc-4_3-branch revision 135036]] on
linux2
Type "help", "copyright" , "credits" or "license" for more information.

>>>>

>
I dont remember the exact version of Python on the earlier Suse 10.2
box
>
My questions:
>
1. Is this not an API change ? I looked up Python's release
documentation and didn't find any mention of the same.

Tkinter is a very thin wrapper over an embedded tcl/tk interpreter. So I
guess the API change is caused by a tcl/tk version change, not by a Python
one. You can check the version of the tcl/tk interpreter you're using from
Python via:

root = Tkinter.Tk()
root.tk.eval('p uts $tcl_patchLevel ')
root.tk.eval('p uts $tk_patchLevel' )

2. How can I achieve what I want alternatively ?

I'd use this way:

import tkFont
entryFontDescr = Entry()["font"]
entry_font = tkFont.Font(fon t=entryFontDesc r)
print entry_font.actu al()

Regards,
-- Atul

HTH
--
python -c "print ''.join([chr(154 - ord(c)) for c in
'U(17zX(%,5.zmz 5(17l8(%,5.Z*(9 3-965$l7+-'])"

[Atul]

Re: Tkinter Entry widgets 'font' property (API ?) changed in Python2.5.2 ?

Hi Eric,

Thanks for your response.

Tkinter is a very thin wrapper over an embedded tcl/tk interpreter. So I  
guess the API change is caused by a tcl/tk version change, not by a Python  
one. You can check the version of the tcl/tk interpreter you're using from  
Python via:
>
root = Tkinter.Tk()
root.tk.eval('p uts $tcl_patchLevel ')
root.tk.eval('p uts $tk_patchLevel' )
>

The Windows box reports 8.4.12 whereas the OpenSuze 11 box reports
8.5.2
I suppose the Suze 10.2 box had a lesser version and hence the API
change.

2. How can I achieve what I want alternatively ?

>
I'd use this way:
>
import tkFont
entryFontDescr = Entry()["font"]
entry_font = tkFont.Font(fon t=entryFontDesc r)
print entry_font.actu al()
>

This works very well, thank you :)

Regards,
-- Atul