Sequences allow you to store multiple values in an organized and efficient fashion. There are several sequence types: strings, Unicode strings, lists, tuples, bytearrays, and range objects. Dictionaries and sets are containers for non-sequential data.
From the official Python Docs −
Strings are immutable sequences of Unicode code points.
Lists are mutable sequences, typically used to store collections of homogeneous items.
Tuples are immutable sequences, typically used to store collections of heterogeneous data (such as the 2-tuples produced by the enumerate() built-in).
Bytearray objects are mutable, they support the mutable sequence operations in addition to the common bytes and bytearray operations
The range type represents an immutable sequence of numbers and is commonly used for looping a specific number of times in for loops.