Confused about namespaces

[KvS]

Hmm. But actually I was doing this import from GUIclasses with exactly
this in mind, namely that it would make wx also available at top level.
I (in my naive understanding) see this as "natural" and actually
desirable, how could this cause confusing bugs? Do you mean multiple
"from ... import *"'s 'on top of each other' would cause foo1.foo2.attr
and foo1.attr both would become just attr and therefore ambiguous at
top level?

If you import foo in two different modules, does the interpreter then
create one instance of foo and create a reference in both modules to
the same foo rather than creating two different instances of foo?