Type Casting in Python - GeeksforGeeks

See More

In this video, we will explore the fundamental data types in Python, including numbers and strings, and learn about type casting (type conversion). Understanding these concepts is crucial for any Python programmer, as they form the basis of data manipulation and processing. This tutorial is perfect for students, professionals, or anyone interested in enhancing their Python programming skills by learning about data types, numbers, casting, and strings.<\/p>

Why Learn About Data Types, Numbers, Casting, and Strings?<\/h4>

Understanding these concepts helps to:<\/p>

Manipulate Data<\/strong>: Effectively handle and process different types of data.<\/li>
Improve Code Efficiency<\/strong>: Write efficient and optimized code by using the appropriate data types.<\/li>
Enhance Problem-Solving Skills<\/strong>: Develop better problem-solving skills by understanding how data is represented and manipulated.<\/li><\/ul>
Key Concepts<\/h4>
Data Types<\/strong>:<\/p>
Numbers<\/strong>: Includes integers, floating-point numbers, and complex numbers.<\/li>
Strings<\/strong>: A sequence of characters used to represent text.<\/li><\/ul>
Numbers<\/strong>:<\/p>
Integers<\/strong>: Whole numbers, positive or negative, without decimals.<\/li>
Floats<\/strong>: Numbers with decimal points.<\/li>
Complex Numbers<\/strong>: Numbers with real and imaginary parts.<\/li><\/ul>
Type Casting<\/strong>:<\/p>
The process of converting one data type to another.<\/li><\/ul>
Strings<\/strong>:<\/p>
A data type used to represent text. Strings are immutable in Python.<\/li><\/ul>
Steps to Understand Data Types, Numbers, Casting, and Strings<\/h4>
Numbers in Python<\/strong>:<\/p>
Understand how to work with different types of numbers, including integers, floats, and complex numbers.<\/li>
Learn about basic arithmetic operations.<\/li><\/ul>
Casting in Python<\/strong>:<\/p>
Learn how to convert data from one type to another using casting functions such as int(), float(), str(), etc.<\/li><\/ul>
Strings in Python<\/strong>:<\/p>
Understand how to create, manipulate, and format strings.<\/li>
Learn about common string methods and operations.<\/li><\/ul>
Practical Example<\/h4>
Example: Working with Data Types, Numbers, Casting, and Strings<\/strong><\/p>
Numbers in Python<\/strong>:<\/p>
Learn how to create and manipulate integers, floats, and complex numbers.<\/li>
Perform arithmetic operations like addition, subtraction, multiplication, and division.<\/li><\/ul>
Casting in Python<\/strong>:<\/p>
Convert an integer to a float, a float to an integer, and a number to a string.<\/li>
Understand the use of int(), float(), and str() functions for casting.<\/li><\/ul>
Strings in Python<\/strong>:<\/p>
Create strings using single, double, and triple quotes.<\/li>
Concatenate strings, access string elements using indexing, and slice strings.<\/li>
Use common string methods such as upper(), lower(), strip(), replace(), and split().<\/li><\/ul>
Practical Applications<\/h4>
Data Processing<\/strong>:
Handle and manipulate various types of data in data processing tasks.<\/li><\/ul><\/li>
User Input<\/strong>:
Convert user input from one data type to another for further processing.<\/li><\/ul><\/li>
String Manipulation<\/strong>:
Process and manipulate text data in applications such as text analysis and natural language processing.<\/li><\/ul><\/li><\/ul>\",\"source\":\"https:\/\/videos.geeksforgeeks.org\/hls\/41310191531a34556306f7e2a04822b6gfg-DataTypesNumbersCastingStringsAnshikaGuptaGeeksforGeeksPython20240628171442.m3u8\",\"category\":[{\"term_id__id\":10,\"term_id__term_name\":\"Python\",\"term_id__term_type\":1,\"term_id__slug\":\"python\"},{\"term_id__id\":118,\"term_id__term_name\":\"Python\",\"term_id__term_type\":2,\"term_id__slug\":\"python-eghmaz\"}],\"meta\":{\"thumbnail\":\"https:\/\/media.geeksforgeeks.org\/geeksforgeeks\/DataTypesNumbersCastingStringsinPython\/DataTypesNumbersCastingStrings20240826125626-small.png\",\"largeThumbnail\":\"https:\/\/media.geeksforgeeks.org\/geeksforgeeks\/DataTypesNumbersCastingStringsinPython\/DataTypesNumbersCastingStrings20240826125626.jpg\",\"likes\":0,\"views\":28820,\"isFeatured\":0,\"isPremium\":0,\"isPublic\":0,\"format\":\"video\/mp4\",\"revision\":{}},\"time\":\"26\/08\/2024\",\"subtitle\":\"https:\/\/videos.geeksforgeeks.org\/subtitles\/DataTypesNumbersCastingStringsAnshikaGuptaGeeksforGeeksPython20240628171442.vtt\",\"duration\":1782,\"course_link\":null,\"video_schema\":{\"@context\":\"https:\/\/schema.org\",\"@type\":\"VideoObject\",\"name\":\"Data Types Numbers Casting Strings in Python\",\"description\":\"G-Fact 88 Data Types, Numbers, Casting, and Strings in PythonIn this video, we will explore the fundamental data types in Python, including numbers and strings, and learn about type casting (type conversion). Understanding these concepts is crucial for any Python programmer, as they form the basis of data manipulation and processing. This tutorial is perfect for students, professionals, or anyone interested in enhancing their Python programming skills by learning about data types, numbers, casting, and strings.Why Learn About Data Types, Numbers, Casting, and Strings?Understanding these concepts helps toManipulate Data Effectively handle and process different types of data.Improve Code Efficiency Write efficient and optimized code by using the appropriate data types.Enhance Problem-Solving Skills Develop better problem-solving skills by understanding how data is represented and manipulated.Key ConceptsData TypesNumbers Includes integers, floating-point numbers, and complex numbers.Strings A sequence of characters used to represent text.NumbersIntegers Whole numbers, positive or negative, without decimals.Floats Numbers with decimal points.Complex Numbers Numbers with real and imaginary parts.Type CastingThe process of converting one data type to another.StringsA data type used to represent text. Strings are immutable in Python.Steps to Understand Data Types, Numbers, Casting, and StringsNumbers in PythonUnderstand how to work with different types of numbers, including integers, floats, and complex numbers.Learn about basic arithmetic operations.Casting in PythonLearn how to convert data from one type to another using casting functions such as int(), float(), str(), etc.Strings in PythonUnderstand how to create, manipulate, and format strings.Learn about common string methods and operations.Practical ExampleExample Working with Data Types, Numbers, Casting, and StringsNumbers in PythonLearn how to create and manipulate integers, floats, and complex numbers.Perform arithmetic operations like addition, subtraction, multiplication, and division.Casting in PythonConvert an integer to a float, a float to an integer, and a number to a string.Understand the use of int(), float(), and str() functions for casting.Strings in PythonCreate strings using single, double, and triple quotes.Concatenate strings, access string elements using indexing, and slice strings.Use common string methods such as upper(), lower(), strip(), replace(), and split().Practical ApplicationsData ProcessingHandle and manipulate various types of data in data processing tasks.User InputConvert user input from one data type to another for further processing.String ManipulationProcess and manipulate text data in applications such as text analysis and natural language processing.\",\"thumbnailUrl\":[\"https:\/\/media.geeksforgeeks.org\/geeksforgeeks\/DataTypesNumbersCastingStringsinPython\/DataTypesNumbersCastingStrings20240826125626.jpg\",\"https:\/\/media.geeksforgeeks.org\/geeksforgeeks\/DataTypesNumbersCastingStringsinPython\/DataTypesNumbersCastingStrings20240826125626-seo.png\",\"https:\/\/media.geeksforgeeks.org\/geeksforgeeks\/DataTypesNumbersCastingStringsinPython\/DataTypesNumbersCastingStrings20240826125626-small.png\"],\"uploadDate\":\"2024-08-26T12:58:18Z\",\"duration\":\"PT0H29M42S\",\"contentUrl\":\"https:\/\/www.geeksforgeeks.org\/videos\/data-types-numbers-casting-strings-in-python\/\"}}]"); Type Casting in Python - GeeksforGeeks

Skip to content

Interview Prep
DSA
Interview Corner
Aptitude & Reasoning
Practice Coding Problems
All Courses
Tutorials
Python
Java
ML & Data Science
Programming Languages
Web Development
CS Subjects
DevOps
Software and Tools
School Learning
Tracks
Languages
Python
C
C++
Java
Advanced Java
SQL
JavaScript
C#
Interview Preparation
GfG 160
GfG 360
System Design
Core Subjects
Interview Questions
Interview Puzzles
Aptitude and Reasoning
Product Management
Computer Organisation and Architecture
Data Science
Python
Data Analytics
Complete Data Science
Gen AI
Agentic AI
Dev Skills
Full-Stack Web Dev
DevOps
Software Testing
CyberSecurity
NextJS
Git
Tools
Computer Fundamentals
AI Tools
MS Excel & Google Sheets
MS Word & Google Docs
Maths
Maths For Computer Science
Engineering Mathematics
School Maths

Python Tutorial
Data Types
Interview Questions
Examples
Quizzes
DSA Python
Data Science
NumPy
Pandas
Practice
Django
Flask
Projects

Open In App

Type Casting in Python

Last Updated : 16 Sep, 2025

Comments

Improve

Suggest changes

42 Likes

Like

Report

Type Casting is the method to convert the Python variable datatype into a certain data type in order to perform the required operation by users. In this article, we will see the various techniques for typecasting. There can be two types of Type Casting in Python:
Python Implicit Type Conversion
Python Explicit Type Conversion
Implicit Type Conversion
In this, method, Python converts the datatype into another datatype automatically. Users don't have to involve in this process.
Python # implicit type Casting # Python automatically converts # a to int a = 7 print(type(a)) # Python automatically converts # b to float b = 3.0 print(type(b)) # Python automatically converts # c to float as it is a float addition c = a + b print(c) print(type(c)) # Python automatically converts # d to float as it is a float multiplication d = a * b print(d) print(type(d))

Output
<class 'int'> <class 'float'> 10.0 <class 'float'> 21.0 <class 'float'>
Explicit Type Conversion
In this method, Python needs user involvement to convert the variable data type into the required data type.
Examples of Type Casting in Python
Mainly type casting can be done with these data type functions:
Int(): Python Int() function take float or string as an argument and returns int type object.
float(): Python float() function take int or string as an argument and return float type object.
str(): Python str() function takes float or int as an argument and returns string type object.
Python Convert Int to Float
Here, we are Converting Int to Float in Python with the float() function.
Python # int variable a = 5 # typecast to float n = float(a) print(n) print(type(n))

Output
5.0 <class 'float'>
Python Convert Float to Int
Here, we are Converting Float to int datatype in Python with int() function.
Python # int variable a = 5.9 # typecast to int n = int(a) print(n) print(type(n))

Output
5 <class 'int'>
Python Convert int to String
Here, we are Converting int to String datatype in Python with str() function.
Python # int variable a = 5 # typecast to str n = str(a) print(n) print(type(n))

Output
5 <class 'str'>
Python Convert String to float
Here, we are casting string data type into float data type with float() function.
Python # string variable a = "5.9" # typecast to float n = float(a) print(n) print(type(n))

Output
5.9 <class 'float'>
Python Convert string to int
Here, we are Converting string to int datatype in Python with int() function. If the given string is not number, then it will throw an error.
Python # string variable a = "5" b = 't' # typecast to int n = int(a) print(n) print(type(n)) print(int(b)) print(type(b))
Output
5
<class 'int'>
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
/tmp/ipython-input-1957009883.py in <cell line: 0>()
9 print(type(n))
10
---> 11 print(int(b))
12 print(type(b))
ValueError: invalid literal for int() with base 10: 't'
The string "5" is successfully converted into an integer 5. Since 't' is not a number, Python cannot convert it into an integer.
Adding String and Integer Without Conversion
If we try to directly add an integer and a string, Python will throw an error because they are different data types.
Python # integer variable a = 5 # string variable b = 't' # typecast to int n = a+b print(n) print(type(n))
Output
TypeError: unsupported operand type(s) for +: 'int' and 'str'
We should first convert the string into an integer and then add:
Python a = 5 b = '7' # explicit conversion of string to int n = a + int(b) print(n) print(type(n))

Output
12 <class 'int'>

Create Quiz

Data Types Numbers Casting Strings in Python

K

kumar_satyam

Improve

K

kumar_satyam

Improve

Article Tags :

Python

Python-Data Type

Explore

Python Fundamentals
Python Introduction
2 min read
Input and Output in Python
4 min read
Python Variables
4 min read
Python Operators
4 min read
Python Keywords
2 min read
Python Data Types
8 min read
Conditional Statements in Python
3 min read
Loops in Python - For, While and Nested Loops
5 min read
Python Functions
5 min read
Recursion in Python
4 min read
Python Lambda Functions
5 min read
Python Data Structures
Python String
5 min read
Python Lists
4 min read
Python Tuples
4 min read
Python Dictionary
3 min read
Python Sets
6 min read
Python Arrays
7 min read
List Comprehension in Python
4 min read
Advanced Python
Python OOP Concepts
11 min read
Python Exception Handling
5 min read
File Handling in Python
4 min read
Python Database Tutorial
4 min read
Python MongoDB Tutorial
3 min read
Python MySQL
9 min read
Python Packages
10 min read
Python Modules
3 min read
Python DSA Libraries
15 min read
List of Python GUI Library and Packages
3 min read
Data Science with Python
NumPy Tutorial - Python Library
3 min read
Pandas Tutorial
4 min read
Matplotlib Tutorial
5 min read
Python Seaborn Tutorial
3 min read
StatsModel Library - Tutorial
3 min read
Learning Model Building in Scikit-learn
6 min read
TensorFlow Tutorial
2 min read
PyTorch Tutorial
6 min read
Web Development with Python
Flask Tutorial
8 min read
Django Tutorial | Learn Django Framework
7 min read
Django ORM - Inserting, Updating & Deleting Data
4 min read
Templating With Jinja2 in Flask
6 min read
Django Templates
5 min read
Build a REST API using Flask - Python
3 min read
Building a Simple API with Django REST Framework
3 min read
Python Practice
Python Quiz
1 min read
Python Coding Practice
1 min read
Python Interview Questions and Answers
15+ min read

top_of_element && top_of_screen < bottom_of_element) || (bottom_of_screen > articleRecommendedTop && top_of_screen < articleRecommendedBottom) || (top_of_screen > articleRecommendedBottom)) { if (!isfollowingApiCall) { isfollowingApiCall = true; setTimeout(function(){ if (loginData && loginData.isLoggedIn) { if (loginData.userName !== $('#followAuthor').val()) { is_following(); } else { $('.profileCard-profile-picture').css('background-color', '#E7E7E7'); } } else { $('.follow-btn').removeClass('hideIt'); } }, 3000); } } }); } $(".accordion-header").click(function() { var arrowIcon = $(this).find('.bottom-arrow-icon'); arrowIcon.toggleClass('rotate180'); }); }); window.isReportArticle = false; function report_article(){ if (!loginData || !loginData.isLoggedIn) { const loginModalButton = $('.login-modal-btn') if (loginModalButton.length) { loginModalButton.click(); } return; } if(!window.isReportArticle){ //to add loader $('.report-loader').addClass('spinner'); jQuery('#report_modal_content').load(gfgSiteUrl+'wp-content/themes/iconic-one/report-modal.php', { PRACTICE_API_URL: practiceAPIURL, PRACTICE_URL:practiceURL },function(responseTxt, statusTxt, xhr){ if(statusTxt == "error"){ alert("Error: " + xhr.status + ": " + xhr.statusText); } }); }else{ window.scrollTo({ top: 0, behavior: 'smooth' }); $("#report_modal_content").show(); } } function closeShareModal() { const shareOption = document.querySelector('[data-gfg-action="share-article"]'); shareOption.classList.remove("hover_share_menu"); let shareModal = document.querySelector(".hover__share-modal-container"); shareModal && shareModal.remove(); } function openShareModal() { closeShareModal(); // Remove existing modal if any let shareModal = document.querySelector(".three_dot_dropdown_share"); shareModal.appendChild(Object.assign(document.createElement("div"), { className: "hover__share-modal-container" })); document.querySelector(".hover__share-modal-container").append( Object.assign(document.createElement('div'), { className: "share__modal" }), ); document.querySelector(".share__modal").append(Object.assign(document.createElement('h1'), { className: "share__modal-heading" }, { textContent: "Share to" })); const socialOptions = ["LinkedIn", "WhatsApp","Twitter", "Copy Link"]; socialOptions.forEach((socialOption) => { const socialContainer = Object.assign(document.createElement('div'), { className: "social__container" }); const icon = Object.assign(document.createElement("div"), { className: `share__icon share__${socialOption.split(" ").join("")}-icon` }); const socialText = Object.assign(document.createElement("span"), { className: "share__option-text" }, { textContent: `${socialOption}` }); const shareLink = (socialOption === "Copy Link") ? Object.assign(document.createElement('div'), { role: "button", className: "link-container CopyLink" }) : Object.assign(document.createElement('a'), { className: "link-container" }); if (socialOption === "LinkedIn") { shareLink.setAttribute('href', `https://www.linkedin.com/sharing/share-offsite/?url=${window.location.href}`); shareLink.setAttribute('target', '_blank'); } if (socialOption === "WhatsApp") { shareLink.setAttribute('href', `https://api.whatsapp.com/send?text=${window.location.href}`); shareLink.setAttribute('target', "_blank"); } if (socialOption === "Twitter") { shareLink.setAttribute('href', `https://twitter.com/intent/tweet?url=${window.location.href}`); shareLink.setAttribute('target', "_blank"); } shareLink.append(icon, socialText); socialContainer.append(shareLink); document.querySelector(".share__modal").appendChild(socialContainer); //adding copy url functionality if(socialOption === "Copy Link") { shareLink.addEventListener("click", function() { var tempInput = document.createElement("input"); tempInput.value = window.location.href; document.body.appendChild(tempInput); tempInput.select(); tempInput.setSelectionRange(0, 99999); // For mobile devices document.execCommand('copy'); document.body.removeChild(tempInput); this.querySelector(".share__option-text").textContent = "Copied" }) } }); // document.querySelector(".hover__share-modal-container").addEventListener("mouseover", () => document.querySelector('[data-gfg-action="share-article"]').classList.add("hover_share_menu")); } function toggleLikeElementVisibility(selector, show) { document.querySelector(`.${selector}`).style.display = show ? "block" : "none"; } function closeKebabMenu(){ document.getElementById("myDropdown").classList.toggle("show"); }

Corporate & Communications Address:

A-143, 7th Floor, Sovereign Corporate Tower, Sector- 136, Noida, Uttar Pradesh (201305)

Registered Address:
K 061, Tower K, Gulshan Vivante Apartment, Sector 137, Noida, Gautam Buddh Nagar, Uttar Pradesh, 201305

Company
About Us
Legal
Privacy Policy
Contact Us
Advertise with us
GFG Corporate Solution
Campus Training Program
Explore
POTD
Job-A-Thon
Blogs
Nation Skill Up
Tutorials
Programming Languages
DSA
Web Technology
AI, ML & Data Science
DevOps
CS Core Subjects
Interview Preparation
Software and Tools
Courses
ML and Data Science
DSA and Placements
Web Development
Programming Languages
DevOps & Cloud
GATE
Trending Technologies
Videos
DSA
Python
Java
C++
Web Development
Data Science
CS Subjects
Preparation Corner
Interview Corner
Aptitude
Puzzles
GfG 160
System Design

@GeeksforGeeks, Sanchhaya Education Private Limited, All rights reserved

Improvement

Suggest Changes

Help us improve. Share your suggestions to enhance the article. Contribute your expertise and make a difference in the GeeksforGeeks portal.

Create Improvement

Enhance the article with your expertise. Contribute to the GeeksforGeeks community and help create better learning resources for all.

Suggest Changes

min 4 words, max Words Limit:1000

Thank You!

Your suggestions are valuable to us.

What kind of Experience do you want to share?

Interview Experiences

Admission Experiences

Career Journeys

Work Experiences

Campus Experiences

Competitive Exam Experiences