What Is Built-in Data Type in Python?


Angela Bailey

What Is Built-in Data Type in Python?

Python is a versatile programming language that offers a wide range of built-in data types. These data types help in storing and manipulating different kinds of values within a program. Understanding the various built-in data types in Python is essential for anyone looking to become proficient in this language.

Numeric Data Types

Python provides several numeric data types, including:

  • int: Represents integer values, such as 5 or -10.
  • float: Represents floating-point numbers, such as 3.14 or -2.5.
  • complex: Represents complex numbers with real and imaginary parts, such as 2+3j.

Sequence Data Types

In Python, sequence data types allow you to work with collections of items. The main sequence data types are:

  • str: Represents a sequence of characters enclosed in single or double quotes, like “Hello” or ‘World’.
  • list: Represents an ordered collection of items enclosed in square brackets, such as [1, 2, 3] or [‘apple’, ‘banana’, ‘cherry’].
  • tuple: Similar to lists but immutable (cannot be modified), enclosed in parentheses, like (1, 2, 3) or (‘red’, ‘green’, ‘blue’).

Mappings and Sets

In addition to sequences, Python provides two other built-in data types:

  • dict: Represents key-value pairs enclosed in curly braces, such as {‘name’: ‘John’, ‘age’: 25}.
  • set: Represents an unordered collection of unique elements enclosed in curly braces, like {1, 2, 3} or {‘apple’, ‘banana’, ‘cherry’}.

Boolean Data Type

The boolean data type is a fundamental type in Python. It represents the truth values True and False. Boolean values are often used in conditional statements and logical operations to control the flow of a program.

None Data Type

The None data type is used to represent the absence of a value. It is often used as a placeholder when a variable needs to be defined but does not have a specific value yet.


In this tutorial, we explored the various built-in data types available in Python. From numeric data types like int and float to sequence types such as str and list, each data type serves its purpose in Python programming. Understanding these data types is crucial for writing efficient and effective code.

Now that you have a good grasp of Python’s built-in data types, you can start using them to create powerful and dynamic programs!

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