I'm trying to manage user preferences in a Tkinter application by
initializing some values that can then be configured from a GUI. The
values are set up as a dict, like so:
self.prefs= {
'interface': '-en1',
'verbose': '-v',
'fontname': 'Courier',
'point': 12,
}
To link these values to the appropriate Tkinter variables, I'm using
code like this:
self.prefs['interface'] = StringVar()
self.prefs['interface'].set("-en0") # initialize
This raises an error in Tkinter:
Exception in Tkinter callback
Traceback (most recent call last):
File
"/Library/Frameworks/Python.framewor k/Versions/2.5/lib/python2.5/lib-tk/Tkinter.py",
line 1403, in __call__
return self.func(*args )
File "/Users/kevin/Programming/packetstream/packetstream-classes.py",
line 293, in setPrefs
self.prefs['interface'] = StringVar()
File
"/Library/Frameworks/Python.framewor k/Versions/2.5/lib/python2.5/lib-tk/Tkinter.py",
line 3237, in __setitem__
self.tk.call(se lf.name, 'configure', '-'+key, value)
TclError: unknown option "-interface"
Can someone help me smooth this out--to get dict key-values into a
Tkinter variable like StringVar()?
Thanks.
--
Kevin Walzer
Code by Kevin http://www.codebykevin.com 4  5492 
Kevin Walzer wrote:
I'm trying to manage user preferences in a Tkinter application by
initializing some values that can then be configured from a GUI. The
values are set up as a dict, like so:
self.prefs= {
'interface': '-en1',
'verbose': '-v',
'fontname': 'Courier',
'point': 12,
}
To link these values to the appropriate Tkinter variables, I'm using
code like this:
self.prefs['interface'] = StringVar()
self.prefs['interface'].set("-en0") # initialize
Are you sure this particular "prefs" is a dictionary and not some kind
of Tkinter entity, like, say, a Toplevel?
E.g.
pyfrom Tkinter import *
pyL = Label()
pyL['prefs'] = 'avalue'
------------------------------------------------------------
Traceback (most recent call last):
File "<ipython console>", line 1, in <module>
File
"/data10/users/jstroud/Programs/lib/python2.5/lib-tk/Tkinter.py", line
1204, in __setitem__
self.configure( {key: value})
File
"/data10/users/jstroud/Programs/lib/python2.5/lib-tk/Tkinter.py", line
1197, in configure
return self._configure ('configure', cnf, kw)
File
"/data10/users/jstroud/Programs/lib/python2.5/lib-tk/Tkinter.py", line
1188, in _configure
self.tk.call(_f latten((self._w , cmd)) + self._options(c nf))
<class '_tkinter.TclEr ror'>: unknown option "-prefs"
Does this error message look familiar?
Consider:
pyL['text'] = 'bob'
pyL.cget('text' )
'bob'
pyL.config(text ='carol')
pyL.cget('text' )
'carol'
James
This raises an error in Tkinter:
Exception in Tkinter callback
Traceback (most recent call last):
File
"/Library/Frameworks/Python.framewor k/Versions/2.5/lib/python2.5/lib-tk/Tkinter.py",
line 1403, in __call__
return self.func(*args )
File "/Users/kevin/Programming/packetstream/packetstream-classes.py",
line 293, in setPrefs
self.prefs['interface'] = StringVar()
File
"/Library/Frameworks/Python.framewor k/Versions/2.5/lib/python2.5/lib-tk/Tkinter.py",
line 3237, in __setitem__
self.tk.call(se lf.name, 'configure', '-'+key, value)
TclError: unknown option "-interface"
Can someone help me smooth this out--to get dict key-values into a
Tkinter variable like StringVar()?
Thanks.
--
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095 http://www.jamesstroud.com/
Kevin Walzer wrote:
I'm trying to manage user preferences in a Tkinter application by
initializing some values that can then be configured from a GUI. The
values are set up as a dict, like so:
self.prefs= {
'interface': '-en1',
'verbose': '-v',
'fontname': 'Courier',
'point': 12,
}
To link these values to the appropriate Tkinter variables, I'm using
code like this:
self.prefs['interface'] = StringVar()
self.prefs['interface'].set("-en0") # initialize
This raises an error in Tkinter:
Exception in Tkinter callback
Traceback (most recent call last):
File
"/Library/Frameworks/Python.framewor k/Versions/2.5/lib/python2.5/lib-tk/Tkinter.py",
line 1403, in __call__
return self.func(*args )
File "/Users/kevin/Programming/packetstream/packetstream-classes.py",
line 293, in setPrefs
self.prefs['interface'] = StringVar()
File
"/Library/Frameworks/Python.framewor k/Versions/2.5/lib/python2.5/lib-tk/Tkinter.py",
line 3237, in __setitem__
self.tk.call(se lf.name, 'configure', '-'+key, value)
TclError: unknown option "-interface"
Can someone help me smooth this out--to get dict key-values into a
Tkinter variable like StringVar()?
Thanks.
I overlooked this latter question.
Probably, your naming confusion above with self.prefs and the resulting
errors obscure your intention. But, were I to keep a dictionary of
StringVars for prefs, I would initialize it in this manner:
# somewhere in self
defaults = {
'interface' : '-en1',
'verbose' : '-v',
'fontname' : 'Courier',
'point' : 12
}
self.prefs = dict((d,StringV ar()) for d in defaults)
for d in defaults:
self.prefs[d].set(defaults[d])
Note, of course, that you will need to access 'point' like this if you
want it back as an int:
int(self.prefs['point'].get())
Because StringVars return strings from their get() method.
James
--
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095 http://www.jamesstroud.com/
Kevin Walzer wrote:
I'm trying to manage user preferences in a Tkinter application by
initializing some values that can then be configured from a GUI. The
values are set up as a dict, like so:
self.prefs= {
'interface': '-en1',
'verbose': '-v',
'fontname': 'Courier',
'point': 12,
}
To link these values to the appropriate Tkinter variables, I'm using
code like this:
self.prefs['interface'] = StringVar()
self.prefs['interface'].set("-en0") # initialize
This raises an error in Tkinter:
Exception in Tkinter callback
Traceback (most recent call last):
File
"/Library/Frameworks/Python.framewor k/Versions/2.5/lib/python2.5/lib-tk/Tkinter.py",
line 1403, in __call__
return self.func(*args )
File "/Users/kevin/Programming/packetstream/packetstream-classes.py",
line 293, in setPrefs
self.prefs['interface'] = StringVar()
File
"/Library/Frameworks/Python.framewor k/Versions/2.5/lib/python2.5/lib-tk/Tkinter.py",
line 3237, in __setitem__
self.tk.call(se lf.name, 'configure', '-'+key, value)
TclError: unknown option "-interface"
Can someone help me smooth this out--to get dict key-values into a
Tkinter variable like StringVar()?
Thanks.
Actually, even more succinctly:
# somewhere in self
defaults = {
'interface' : '-en1',
'verbose' : '-v',
'fontname' : 'Courier',
'point' : 12
}
self.prefs = dict((d,StringV ar(value=v)) for (d,v) in defaults.items( ))
James
--
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095 http://www.jamesstroud.com/
James Stroud wrote:
Kevin Walzer wrote:
>I'm trying to manage user preferences in a Tkinter application by
initializing some values that can then be configured from a GUI. The
values are set up as a dict, like so:
self.prefs= {
'interface': '-en1',
'verbose': '-v',
'fontname': 'Courier',
'point': 12,
}
To link these values to the appropriate Tkinter variables, I'm using
code like this:
self.prefs['interface'] = StringVar()
self.prefs['interface'].set("-en0") # initialize
This raises an error in Tkinter:
Exception in Tkinter callback
Traceback (most recent call last):
File
"/Library/Frameworks/Python.framewor k/Versions/2.5/lib/python2.5/lib-tk/Tkinter.py",
line 1403, in __call__
return self.func(*args )
File
"/Users/kevin/Programming/packetstream/packetstream-classes.py", line
293, in setPrefs
self.prefs['interface'] = StringVar()
File
"/Library/Frameworks/Python.framewor k/Versions/2.5/lib/python2.5/lib-tk/Tkinter.py",
line 3237, in __setitem__
self.tk.call(se lf.name, 'configure', '-'+key, value)
TclError: unknown option "-interface"
Can someone help me smooth this out--to get dict key-values into a
Tkinter variable like StringVar()?
Thanks.
I overlooked this latter question.
Probably, your naming confusion above with self.prefs and the resulting
errors obscure your intention. But, were I to keep a dictionary of
StringVars for prefs, I would initialize it in this manner:
# somewhere in self
defaults = {
'interface' : '-en1',
'verbose' : '-v',
'fontname' : 'Courier',
'point' : 12
}
self.prefs = dict((d,StringV ar()) for d in defaults)
for d in defaults:
self.prefs[d].set(defaults[d])
Note, of course, that you will need to access 'point' like this if you
want it back as an int:
int(self.prefs['point'].get())
Because StringVars return strings from their get() method.
James
Thanks, these snippets helped me work this out.
--
Kevin Walzer
Code by Kevin http://www.codebykevin.com This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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