Glossary of terms

A tuple is a sequence of immutable Python objects. Tuples are sequences, just like lists. The differences between tuples and lists are, the tuples cannot be changed unlike lists and tuples use parentheses, whereas lists use square brackets

A sort or category of data that can be represented by Python. Any variable we use has a type of: string, integer, long, floating point, list, tuple, or dictionary.

existing only one time, being only once

Variables are nothing but reserved memory locations to store values. This means that when you create a variable you reserve some space in memory.

Anything that stores in a variable replaces the previous value inside.