using yield to iterate c4d object/tag and materials

Walking_with_yield.py

import c4d

def walk_objects(obj):
    if obj:        
        yield obj
        for x in walk_objects(obj.GetDown()):  # happily fail on tags and materials
            yield x
        for x in walk_objects(obj.GetNext()):
            yield x


if __name__=='__main__':
    obj = doc.GetFirstObject()
    tag = obj.GetFirstTag()
    mat = doc.GetFirstMaterial()
    
    # to iterate through object heirarchies
    for o in walk_objects(obj):
        print o.GetName()
        
    # iterate through tags on first object
    for t in walk_objects(tag):
        print t.GetName()
    
    # and mats
    for m in walk_objects(mat):
        print m.GetName()