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

P: n/a
Hi,

The snippet :

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

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
Aug 6 '08 #1
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2 Replies

P: n/a
On Wed, 06 Aug 2008 06:01:59 +0200, Atul <at*******@gmail.comwrote:
Hi,

The snippet :

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

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('puts $tcl_patchLevel')
root.tk.eval('puts $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(font=entryFontDescr)
print entry_font.actual()
Regards,
-- Atul
HTH
--
python -c "print ''.join([chr(154 - ord(c)) for c in
'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-'])"
Aug 6 '08 #2

P: n/a
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('puts $tcl_patchLevel')
root.tk.eval('puts $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(font=entryFontDescr)
print entry_font.actual()
This works very well, thank you :)

Regards,
-- Atul
Aug 9 '08 #3

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