Namespaces
	• A namespace is a mapping from ‘name’ to object • A name only has meaning within a namespace • The dot notation qualifies namespaces • a.b.   Name ‘b’ in namespace ‘a’ • Namespaces are object that can be names •   A.B.C   name ‘C’ in ‘B’ in ‘A’ • (=, def, class, import) bind names • Namespaces are dictionaries