Python: How to select all instances at once? 1

[dfgsdfgfd]

Hi everyone,

Using Python, I'm trying to select the faces of all instances with getByBoundingBox:

faces = a.rootAssembly.instances['Part-1'].faces.getByBoundingBox(...)+        a.rootAssembly.instances['Part-2'].faces.getByBoundingBox(...)+        a.rootAssembly.instances['Part-3'].faces.getByBoundingBox(...)+        ...

This is very tedious for many instances. Unfortunately, rootAssembly doesn't have the attribute faces, so I can't use

faces = a.rootAssembly.faces.getByBoundingBox(...)

Is there an alternative way to select all faces with a bounding box?

Thanks very much!

 

[Mustaine3]

Just collect all faces with two simple for-loops. The first over all instances and the second over all faces of each instance.

 

[dfgsdfgfd]

Thanks very much for your response. When I try to do that, I get an error saying "TypeError: 'Repository' object is not iterable"

My code is:

edges1 = [] 
for i in a.rootAssembly.instances:
    edges1.append(i.edges.getByBoundingBox(-1,-1,-1,1,1,1))]

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Edit: I think I found the solution (maybe there's a simpler one?):

edges1 = [] 
for i in a.rootAssembly.instances.keys():
    edges1.append(a.rootAssembly.instances[i].edges.getByBoundingBox(-1,-1,-1,1,1,1))]

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Edit2: I have to do the second iteration, as you mentioned, as well:

edges1 = [] 
for i in a.rootAssembly.instances.keys():
    for ii in a.rootAssembly.instances[i].edges.getByBoundingBox(-1,-1,-1,1,1,1):
        edges1.append(ii)

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Edit3: I give up.. the above works for the edges, but not for faces. When I do it with faces, i get the error "TypeError: faces; found tuple, expecting GeomSequence"

Any help is appreciated, please.

 

[Mustaine3]

That below is what I've ment. With these simple loops you cycle over all faces and can do whatever you like with it.

a = mdb.models['Model-1'].rootAssembly

for iname in a.instances.keys():
    for xface in a.instances[iname].faces:
        print iname, xface.index

 

[HayaNaji]

This is in the Assembly module , what if I want to select the faces of a part in the part module with getByBoundingBox ??