[Tutor] Some "type" confusion...

[Gizmo]

Hello
I am learning Python via the excellent Dive Into Python book. I have little
question

1)
>>> import os
>>> type(os.environ)
<type 'instance'>

Why is this considered "instance" ? Should'nt it be "dict" type?
I have a feeling I am missing something deeper here.

2) What would happen if I did this
>>> os.environ = {}
Hopefully, I wont be allowed to do that...but I am too scared to try.

Sincere Regards,
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