[Tutor] Read dictionary data in a specific order...
Hello.
I would like to know, how can I read (or sort) a dictionary in a certain
order?
say this is my dictionary-
attrs={u'title': u'example window title', u'name': u'SELF', u'icon':
u'e.ico'}
how could I get the data so that u'name' is read first, u'title' second,
and u'icon' third?
thanks so much for any help-
Trey
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Re: [Tutor] Read dictionary data in a specific order...
> "Trey Keown" <[EMAIL PROTECTED]> wrote
>
>> I would like to know, how can I read (or sort) a dictionary in a
>> certain
>> order?
>
> Dictionaries are by design unsorted and indeed may even change
> their order during their lifetime.
>
>> attrs={u'title': u'example window title', u'name': u'SELF', u'icon':
>> u'e.ico'}
>> how could I get the data so that u'name' is read first, u'title'
>> second,
>> and u'icon' third?
>
> Normally you would sort the keys of the dictionary but since
> your order is not a natural sort order then the easiest way is
> probably to create a list of the keys you want in the order you
> want them. Thus:
>
> keys = ['name','title','icon']
> for key in keys: print attrs[key]
>
--
Okay, the reason I need to know this is that expat, my xml parsing module,
returns the attributes of an xml element as a dictionary. Now that i've
done what you recommended above, my xml parsing program returns the
dictionary's value as the value and the tag.
here's my code-
"""""""""""""""""""""""""""""""""""""
...
global window_attrs_key_order
window_attrs_key_order = ["name", "title", "icon"]
def start_element(name, attrs):
global window_attrs_key_order
if name in acceptedelements:
..
if name == "window":
print attrs.iteritems()
for (tag,val) in attrs.iteritems():
if tag in window_attrs_key_order:
for tag in window_attrs_key_order:
if tag == u"name":
print "%s%s = Tk()"
%(whitespace, val)
print "***^^^%s^^^***"
%val
whatwindow = val
if tag == u"title":
print
"%s%s.title(\"%s\")" % (whitespace, whatwindow, val)
if tag == u"icon":
if val == "NONE":
print "#>NO
ICON"
else:
print
"%s%s.iconbitmap(\"%s\")" %(whitespace, whatwindow, val)
else:
print "#-Error, unrecognized
attribute in window element...-"
..
"""""""""""""""""""""""""""""""""""""
here's a likely example of what expat would spit out the attributes as-
"""""""""""""""""""""""""""""""""""""
attrs={u'title': u'example window title', u'name': u'SELF', u'icon':
u'e.ico'}
"""""""""""""""""""""""""""""""""""""
and the program output is this-
"""""""""""""""""""""""""""""""""""""
..
Example Window Title = Tk()
***^^^Example Window Title^^^***
Example Window Title.title("Example Window Title")
Example Window Title.iconbitmap("Example Window Title")
SELF = Tk()
***^^^SELF^^^***
SELF.title("SELF")
SELF.iconbitmap("SELF")
e.ico = Tk()
***^^^e.ico^^^***
e.ico.title("e.ico")
e.ico.iconbitmap("e.ico")
"""""""""""""""""""""""""""""""""""""
why would you think that the program would do this?
Trey
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[Tutor] A replacement for a "for" loop
Hello everybody.
I'm using a couple of "for" loops to help me in xml parsing using expat.
Unfortunately, though, I've found that using more than one of these in a
row, at least in my case, causes a redundancy error.
a snippet of my code (note that this is not the way I set the dictionaries)-
attrs={u'title': u'example window title', u'name': u'SELF', u'icon':
u'e.ico'}
keys = ['name','title','icon']
for (tag, val) in attrs.iteritems():
for key in keys:
print val
the first "for" tag causes the dictionary (attrs) to have its keys called
"tag" and its value called "val". The second "for" loop causes the
dictionary keys to be read in a certain order. How could I take away the
first "for" loop and replace it with something else to do the same general
function?
thanks for any help.
Trey
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[Tutor] replacement for .mainloop() in Tk
Okay, I'm making a program that turns xml code into python code. Here's
the an example of input-
And here would be the corresponding output (well, what I've got so far...)
from Tkinter import *
import tkFileDialog
##
self = Tk()
self.title("Example Window Title")
self.iconbitmap("e.ico")
##
##
##
##
Now, as you probably see, there isn't a "self.mainloop()" function in the
output. My question is-
*Is there any other thing I could use instead of ".mainloop()" to make a
window come up? Because I noticed that only one window can be up at a time
that has a ".mainloop()" attribute.
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