What changed in Python 3?

Most notable and most widely known change in Python 3 is how the print function is used. Use of parenthesis () with print function is now mandatory. It was optional in Python 2. The print() function inserts a new line at the end, by default.

What are the new things in Python?

What’s New in Python

• Summary – Release highlights.
• New Features.
• New Features Related to Type Hints.
• Other Language Changes.
• New Modules.
• Improved Modules.
• Optimizations.
• Deprecated.

Is Python 3.9 better?

Major Python update brings a faster release schedule, performance boosts, handy new string functions, dictionary union operators, and more consistent and stable internal APIs. Python 3.9, released today, brings forward significant changes to both the features of the language and to how the language is developed.

What is the latest version of Python 3?

Python 3.8. 10, documentation released on 3 May 2021. Python 3.8. 9, documentation released on 2 April 2021.

Is Python 3.9 fast?

Python 3.9 is Faster Than Python 3.8 Replacing the parser with a PEG version promises to get rid of all of the nastiness and make adding language features easier. Like any other development, easier changes generally lead to more features in the same time, so this sounds like a plus.

What is the latest version of Python in 2021?

Python 3.9. 6, documentation released on 28 June 2021.

Which Python is faster?

Python 3.7 is the fastest of the “official” Python’s and PyPy is the fastest implementation I tested.

What is the latest version of Python 3 9?

Python 3.9 is the last version providing those Python 2 backward compatibility layers, to give more time to Python projects maintainers to organize the removal of the Python 2 support and add support for Python 3.9.

What’s new in CPython?

New features in the standard library: PEP 593, flexible function and variable annotations; os.pidfd_open () added that allows process management without races and signals. Interpreter improvements: PEP 573, fast access to module state from methods of C extension types; PEP 617, CPython now uses a new parser based on PEG;

What do the Python release notes mean?

When a new Python version is released, the release notes are usually divided into topics such as: syntax features, built-in features, new features in the standard library, Interpreter improvements, and new library modules.

Is Python 2 backwards compatible with Python 3?

When Python 2.7 was still supported, a lot of functionality in Python 3 was kept for backward compatibility with Python 2.7. With the end of Python 2 support, these backward compatibility layers have been removed, or will be removed soon. Most of them emitted a DeprecationWarning warning for several years.