some more pythony questions

[Choad]

im really beggining to love this language

anyhow... question time

if i have a list

weights ("kilos", "grams", "pounds", "ounces")

and so on. and i use it as a list in a function. but what if i wanted to add another dimension to the array, so each weight metric could have a value associated with it (this is for a conversion app, if you hadnt guessed)

how would i go about this, and how would i make sure its still useable by the function that treats it as a string list?

def setModelFromList (cb, items):
""" Setup a ComboBox or ComboBoxEntry based on a list of strings.
Note: This function was taken from
http://www.async.com.br/faq/pygtk/index.py?req=show&file=faq16.008.htp """
model = gtk.ListStore(str)
for i in items:
model.append([i])
cb.set_model(model)
if type(cb) == gtk.ComboBoxEntry:
cb.set_text_column(0)
elif type(cb) == gtk.ComboBox:
cell = gtk.CellRendererText()
cb.pack_start(cell, True)
cb.add_attribute(cell, 'text', 0)

that be the function in which its used. the list "weights" is passed to this as it's second argument

[pmasiar]

i wanted to add another dimension to the array, so each weight metric could have a value associated with it

maybe you are looking for a dictionary. it has keys and values. You can still get keys out:

dd = dict(kg=1, pounds=2, ...)
dd.keys()

values also can be lists or tuples (instead of plan scalars). But then you are very close to defining objects...

HTH

[Choad]

thanks for the respone. can you get the string "kg" out of that tho?

ill have a google for it anyway

oh, never mind. i see .keys() returns a list of them!

[Choad]

ok so i made it in to a dictionary, but i need to be able to store a record of which dictionary it is that im using. i have a weights dictionary, a lengths dictionary etc. i need to be able to say

current_dictionary["key"]


or... i just had a thought

i could leave weights, lengths etc. as plain lists and then have a conversion dictionary that conatins everything

yeah that sounds good. tho it does mean its a little wasteful in the memory department.

edit: ok ignore all that.

how do i make it so that when i update my combo box entry, that whatever was previously selected is erased, or at least set to the first option in the combo box or something

[dwblas]

Hopefully you figured it out, that you only use one dictionary as they all (weights, length, etc) have different names/keys. And sorry, I use Tkinter, not GTK, but it should have something similar to Tkinter's set function.