Python appending 2D array?

Question

it has been a while for me doing python scripting after about 8 months of hiatus. Really need some insights. I have been trying to set or modify the camera filmback/film gate attribute via coding and after much trial and errors, I finally found the command for it but now I am meeting with some other issues..

The first item in list, in Python terms - the index usually starts from 0, however in Maya term's for this filmbackMenu, it starts from 1.

cmds.optionMenu('filmbackMenu', edit = True, select = 0) # Errors-out, stating that it is out of range
cmds.optionMenu('filmbackMenu', edit = True, select = 1) # No errors

Suppose if my filmback Menu is as follows:

list01 = ['itemA-01', 'itemB-02', 'itemC-02', 'itemD-01', 'itemE-01', 'itemF-03']
list01.insert(0,"")
for index, item in enumerate(list01):
    print index, item

while I manage to find a way to have my items start from index '1' by inserting a dummy/blank.. As I am trying to filter out anything that contains '-01' and append both the name and the index into list02, however I only know how to do for either just the name or the index, but I believe I will need both. This is my code section:

list02 = []
for i in list01:
    if '-01' in str(i):
        list02.append(i)
# Result: ['itemA-01', 'itemD-01', 'itemE-01']  # The index here should be 1, 4, 5

Is it possible to append both the name and the index together? For example, itemA-01 1, 'itemD-01' 4 , 'itemE-01' 5? The index need not be shown in the UI, the name will do, still I will need to grab the index value eventually...

Kindly see below for my code, perhaps that may give a better insight and please do feel free to criticize if need be.

import maya.cmds as cmds

list01 = ['itemA-01', 'itemB-02', 'itemC-02', 'itemD-01', 'itemE-01', 'itemF-03']
list01.insert(0,"")
for index, item in enumerate(list01):
    print index, item

list02 = []
for i in list01:
    if '01' in str(i):
        list02.append(i)

window = cmds.window()
cmds.columnLayout()
cmds.optionMenu (label = 'Select a format')
for x in list02:
    cmds.menuItem(label=x)
cmds.button( label = 'Ok')
cmds.button( label = 'Cancel')

cmds.showWindow( window )

What happens in my UI is that, upon the user selection, eg. if I selected itemD-01 which is of index 4, the following code should run:

cmds.optionMenu('filmbackMenu', edit = True, select = 4)

Notice that the flag for select will be changed..

danidee · Accepted Answer · 2016-06-24 16:34:43Z

1

You don't need to add a dummy element to your list enumerate has a second argument that indicates the position it should start from. using this you can store the index and the item side by side in a separate list

list02 = []

list01 = ['itemA-01', 'itemB-02', 'itemC-02', 'itemD-01', 'itemE-01', 'itemF-03']
for index, item in enumerate(list01, 1):
    if '-01' in item:
        list02.append([index, item])

print(list02)

result

[[1, 'itemA-01'], [4, 'itemD-01'], [5, 'itemE-01']]

You can even turn in into an elegant list comprehension

result = [[index, item] for index, item in enumerate(list01, 1) if '-01' in item]

answered Jun 24, 2016 at 16:34

danidee

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3 Comments

dissidia Over a year ago

cool, didn't know that I can enumerate it in this way... Was wondering if you may have any ideas as to how I can return the value in the command flag in the cmds.button? When I tried something like print item, it keeps printing the last item in the list02..

danidee Over a year ago

something like this cmds.optionMenu('filmbackMenu', edit = True, select = list02[0])?...i'm not familiar with maya or you mean return the value when the user clicks on a button

dissidia Over a year ago

I am doing something simple like cmds.button( label = 'Ok', command = ('print list02[0]')) but in actual fact, I am trying to capture/return the index value based on the selection. The UI will be in a function - eg. def ui() in which the whole execution will takes places in another function..

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