如何制作嵌套字典并动态追加数据 [英] How to make a nested dictionary and dynamically append data

问题描述

我有一个循环给我三个变量

I have a loop giving me three variables

matteGroup
matteName
object

我想制作一个包含所有数据的嵌套字典，例如:

I would like to make a nested dicionary holding all the data like:

dictionary{matteGroup: {matteName: obj1, obj2, ob3} }

我正在一个一个地检查对象，所以我想创建 matteGroup 如果它不存在，创建 matteName 如果它不存在并且然后创建或附加对象的名称.我尝试了很多解决方案，如普通词典、defaultdict 和我在网上找到的一些自定义类，但我一直无法正确完成.我有一个很好的嵌套，我无法追加，反之亦然.

I am checking the objects one by one so I would like to create the matteGroup if it doesn't exist, create the matteName if it doesn't exixst and then create or append the name of the object. I tryed a lot of solution like normal dictionaries, defaultdict and some custom classes I found on the net, but I haven't been able to do it properly. I have a nice nesting I am not able to append, or vice versa.

这是循环

    dizGroup = {}
    dizName = {}

    for obj in mc.ls(type='transform'):
        if mc.objExists(obj + ('.matteGroup')):
            matteGroup = mc.getAttr(obj + ('.matteGroup'))
            matteName = mc.getAttr(obj + ('.matteName'))

            if matteGroup not in dizGroup:
                dizGroup[matteGroup] = list()
            dizGroup[matteGroup].append(matteName)

            if matteName not in dizName:
                dizName[matteName] = list()
            dizName[matteName].append(obj)

这样我分别得到了两个字典，但不是很有用！有什么提示吗?

with this I get the two dictionaries separately, but is not so useful! Any hint?

谢谢

推荐答案

尝试这样的事情

dizGroup = {}

for obj in mc.ls(type='transform'):
    if mc.objExists(obj + ('.matteGroup')):
        matteGroup = mc.getAttr(obj + ('.matteGroup'))
        matteName = mc.getAttr(obj + ('.matteName'))

        if matteGroup not in dizGroup:
            dizGroup[matteGroup] = {}

        if matteName not in dizGroup[matteGroup]:
            dizGroup[matteGroup][matteName] = []

        dizGroup[matteGroup][matteName].append(obj)

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