Differences Between Python 2 And 3

Last Updated on March 19, 2022 by QCity Editorial Stuff

Python is a high-level, dynamic, object-oriented programming language. It supports multiple programming paradigms, including functional and imperative programming. Python was created in 1991 by Guido van Rossum and is an open-source language that can be used for many application domains.

Python 2 has been around since 2000 and it is gradually ending its support period – Old versions of Active Python will still work but new versions will not support them – Some libraries don’t break compatibility with older versions of the language – Python 3 has been around since 2008 and it’s still actively supported by developers

Python 2 and Python 3 have a lot of differences. One of the most obvious ones is that Python 3 is a major update with many new features, changes, and improvements.

If you are a developer or programmer who uses Python, you must know the difference between the two versions. In this article, I will go over some of the most important differences in both versions so you can make an informed decision about which version to use.

Python 3 is an evolution from Python 2. It has been developed as a backward-compatible update to the Python programming language.

In the future, developers will likely need to use both versions of python simultaneously. This means that they have to learn both versions of the language and be sure to know what version should be used in a specific project.

It’s not enough for a developer just to know which version of python should be used in a given project – they must also understand why that decision was made and how it affects their codebase.

Comparison Between Python 2 And 3

Parameters of Comparisonpython 2Python 3
Version Python 2 was released in 2001 and has been the default Python implementation since then. It was designed under the philosophy of “Simple, but Powerful”. Python 3 is the latest version of Python which was released in 2008. It is much more powerful than the previous version and has a more convenient syntax than Python 2.
Released Python 2 that were made that caused many bugs to be present in programs written using it.The main reason behind release of Python 3 was to fix many design flaws
Backward compatible The major difference is that Python 2 is backward-compatible with Python 1Python 3 is not.
First version Python 2 was the first version of the programming language. Python 3 is the current version.

What Is Python 2? 

What Is Python 2

Python is a widely-used general-purpose, high-level programming language. It is designed for building large software applications.

Python 2 is the second major release of the Python programming language and was released in 2000. Python 3 has been out since 2008, but Python 2 remains in use because it has some advantages that are not available in Python 3.

Python’s history starts with Guido van Rossum who started developing an interpreter for the language in 1991 at CWI in Amsterdam to enhance his programming skills. The name “Python” derives from Monty Python’s Flying Circus, which van Rossum enjoyed watching when he was growing up.

Python 2 was released on October 28th, 2008, and Python 3 on December 3rd, 2008.

Since Python 2 was released in 2008, thirteen years have passed and there has been a total of four major releases of Python 2 with the latest being in October 2018.

An easy way to distinguish between the two versions is by looking at their version numbers – Python 2 is numbered “2” while Python 3 is numbered “3”.

What Is Python 3? 

What Is Python 3

Python 3 is an open-source programming language that was built to replace Python 2. Python 3 is backward compatible with Python 2, which means that code written for Python 3 will also run on Python 

Python 3 is the latest version of the Python programming language. It has been released after Python 2. The main change with Python 3 was that developers were encouraged to use Python’s new “Unicode” type for string literals, as a replacement for the traditional string type, which was more limited in its support for characters used worldwide.

Python 3 can be installed on any platform, including Windows, macOS, and Linux operating systems. This makes it easy to create applications on any device without having to worry about compatibility issues as the need arises.

It was first released in 2008. It updates many aspects of its predecessor, including changes in syntax and features. Python 3 has been backward compatible with Python 2 since the start.

Python 3 is an object-oriented language developed by Guido van Rossum and supported by an international community of volunteers. In this article, we will talk about the history of Python 3 and how it compares to its predecessor, Python 2.

10 Differences Between Python 2 And 3

Data Conversion: – Python 3 converts all types of data into Unicode strings that are compatible with string formatting instead of converting them into byte strings that could potentially cause errors in copying or modifying existing files or sources.

Control Flow: – The conditional control flow statements in python 3 allow for much more powerful control when compared to the single if statement in python 2 which can only execute one line of code at a time.

Upgrade: Python 3 is a significant upgrade for Python 2. x, taking many new features to increase performance and ease of use.

Version: Python 2.7 is the last release that will feature backward compatibility with Python 2. x, which means that any code that works on Python 2.7 will continue to work on older versions of Python as well.

library: Python 2 is still widely used and is compatible with Python 3 through the backport library. However, most of the libraries that are used in Python 2 are not compatible with Python 3, though some have been ported to be compatible with both versions.

syntax: The major changes of Python 3 include a completely different syntax for declaring variables and a simpler syntax for defining functions.

Speed: Python 3 is the latest version of the Python programming language. It is mainly designed with speed and efficiency in mind which has led to its popularity among data science projects.

Easier: A major difference between these two versions is that Python 3 has a better syntax. For instance, many developers find that programmers can more easily read and write code in Python 3 because it has fewer brackets, parentheses, and punctuation.

Drastic: Python 2 was released in the year 2000 and Python 3 came out in 2008. There are a few differences between the two, but most of them are not too drastic. The main difference is that Python 2 is an older language and it has been around since before object-oriented programming, while Python 3 is a more modern language that includes object-oriented programming.

Versatile: Python has a long history of being a powerful, versatile programming language that is used by thousands of developers worldwide. It is often used for scripting tasks such as websites, robots, and even cryptocurrency trading bots. In 2017, there were more than eight thousand open source packages available on PyPI (the official repository for third-party packages) which store their code on GitHub 

Interesting Statistics Or Facts Of Python 2 

1. Python is a popular programming language, ranked second in the TIOBE index.

2. The programming language was created in 1991 by Guido van Rossum while working for CWI, a Dutch research institute. A year later, it was released as an open-source project hosted by the Python Software Foundation (PSF).

3. Python is named after Monty Python’s Flying Circus comedy group and Terry Jones’s “And Now For Something Completely Different” sketch on BBC TV series Monty Python’s Flying Circus.

4. The most popular version of python is 2.

5. Python 2 is the default version of python that powers most of the web. It is an easy language to pick up for beginners and does not require much overhead when it comes to using features like objects.

6. It has been used for scientific computing and data analysis, web development, energy exploration and visualization, machine learning algorithms, scientific computing.

7. It can run on multiple operating systems such as Windows, Unix/Linux, and Mac OS X.

8. The most popular version of python 2 is 3.4 with about 88% of all installations.

9. The speed of Python is comparable to C++ but slightly slower than Java in general.

10. Python 3 was developed in response to demand for a clear distinction between Python 2 and 3.

Interesting Statistics Or Facts Of python 3

1. The first version of Python was released in 1991 as a successor to the ABC programming language.

2. In 2009, some estimates stated that some 10% of all web servers were running on Python, making it one of the most popular programming languages on the internet at that time.

3. In October 2014, more than 50% of all web servers were running on Python 2 according to a benchmark by Knitcraft.

4. The first workshop on practical coding for non-programmers was held in 1999 at

5. Python 3 was created by Guido van Rossum in the 1990s

6. Python 3 is a successor of Python 2, which was released in 1991

7. Python 3 is a general-purpose programming language

8. The primary goal of creating Python 3 was speed and efficiency

9. In 2018, the project moved from an open-source license to GPL3

10. There are currently over 4 million python packages in PyPI, with 15% having been released within the last six months.

Conclusion About The Differences Between Python 2 And 3

Python 2 and 3 are two different programming languages that use the same syntax and object-oriented programming. The main difference between the two is the support for various libraries, libraries that may be used to solve a particular problem while writing code.

The main difference between Python 2 vs. Python 3 is that Python 3 is built with features that are more useful for modern applications, such as performance improvements in memory management, the introduction of classes to improve the language’s expressiveness.

The features introduced in Python 3 are generally considered to be more useful in most modern applications compared to their predecessors which were designed with Python 2 in mind.


1. https://en.wikipedia.org/wiki/Python

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