These represent finite ordered sets indexed by non-negative numbers. The built-in function len() returns the number of items of a sequence. When the length of a sequence is n, the index set contains the numbers 0, 1, ..., n-1. Item i of sequence a is selected by a[i].

Python Docs - Standard Type Hierarchy

• Built-in sequence types are:

  • list
  • tuple
  • range

• Built-in sequence types are iterable types (implement required __iter__() method).

• Operations:

  • Common Sequence Operations
  • Mutable Sequence Types
  • Immutable Sequence Types

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