Basic Data Types in Python: A Quick Exploration :

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December 21, 2024
Basic Data Types in Python: A Quick Exploration
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Python data types are fundamental to the language, enabling you to represent various kinds of data. You use basic data types like int, float, and complex for numbers, str for text, bytes and bytearray for binary data, and bool for Boolean values. These data types form the core of most Python programs, allowing you to handle numeric, textual, and logical data efficiently.

Understanding Python data types involves recognizing their roles and how to work with them. You can create and manipulate these data types using built-in functions and methods. You can also convert between them when necessary. This versatility helps you manage data effectively in your Python projects.

By the end of this tutorial, you’ll understand that:

  • Python’s basic data types include int, float, complex, str, bytes, bytearray, and bool.
  • You can check a variable’s type using the type() function in Python.
  • You can convert data types in Python using functions like int(), float(), str(), and others.
  • Despite being dynamically typed, Python does have data types.
  • The most essential data types in Python can be categorized as numeric, sequence, binary, and Boolean.

In this tutorial, you’ll learn only the basics of each data type. To learn more about a specific data type, you’ll find useful resources in the corresponding section.

Take the Quiz: Test your knowledge with our interactive “Basic Data Types in Python: A Quick Exploration” quiz. You’ll receive a score upon completion to help you track your learning progress:

Basic Data Types in Python

Interactive Quiz

Basic Data Types in Python: A Quick Exploration

Take this quiz to test your understanding of the basic data types that are built into Python, like numbers, strings, bytes, and Booleans.

Python’s Basic Data Types

Python has several built-in data types that you can use out of the box because they’re built into the language. From all the built-in types available, you’ll find that a few of them represent basic objects, such as numbers, strings and characters, bytes, and Boolean values.

Note that the term basic refers to objects that can represent data you typically find in real life, such as numbers and text. It doesn’t include composite data types, such as lists, tuples, dictionaries, and others.

In Python, the built-in data types that you can consider basic are the following:

Class Basic Type
int Integer numbers
float Floating-point numbers
complex Complex numbers
str Strings and characters
bytes, bytearray Bytes
bool Boolean values

In the following sections, you’ll learn the basics of how to create, use, and work with all of these built-in data types in Python.

Integer Numbers

Integer numbers are whole numbers with no decimal places. They can be positive or negative numbers. For example, 0, 1, 2, 3, -1, -2, and -3 are all integers. Usually, you’ll use positive integer numbers to count things.

In Python, the integer data type is represented by the int class:

Python 
>>> type(42)
<class 'int'>

In the following sections, you’ll learn the basics of how to create and work with integer numbers in Python.

Integer Literals

When you need to use integer numbers in your code, you’ll often use integer literals directly. Literals are constant values of built-in types spelled out literally, such as integers. Python provides a few different ways to create integer literals. The most common way is to use base-ten literals that look the same as integers look in math:

Python 
>>> 42
42

>>> -84
-84

>>> 0
0

Here, you have three integer numbers: a positive one, a negative one, and zero. Note that to create negative integers, you need to prepend the minus sign (-) to the number.

Python has no limit to how long an integer value can be. The only constraint is the amount of memory your system has. Beyond that, an integer can be as long as you need:

Python 
>>> 123123123123123123123123123123123123123123123123 + 1
123123123123123123123123123123123123123123123124

For a really, really long integer, you can get a ValueError when converting it to a string:

Read the full article at https://realpython.com/python-data-types/ »

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December 21, 2024 at 07:30PM
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