Most of them emitted a DeprecationWarning warning for With the end of PythonĢ support, these backward compatibility layers have been removed, or willīe removed soon. Was kept for backward compatibility with Python 2.7. When Python 2.7 was still supported, a lot of functionality in Python 3 You should check for DeprecationWarning in your code ¶ PEP 602, CPython adopts an annual release cycle. PEP 615, the IANA Time Zone Database is now present in the standardĪn implementation of a topological sort of a graph is now provided in Select, struct, termios, zlib) are now using Time, _weakref) now use multiphase initialization as definedĪ number of standard library modules ( audioop, ast, grp, _json, _locale, math, operator, resource, _codecs, _contextvars, _crypt, _functools, Garbage collection does not block on resurrected objects Ī number of Python modules ( _abc, audioop, _bz2, PEP 617, CPython now uses a new parser based on PEG Ī number of Python builtins (range, tuple, set, frozenset, list, dict) are PEP 573, fast access to module state from methods of C extension Os.pidfd_open() added that allows process management without races PEP 593, flexible function and variable annotations

PEP 616, string methods to remove prefixes and suffixes. PEP 614, relaxed grammar restrictions on decorators. PEP 585, type hinting generics in standard collections PEP 596 - Python 3.9 Release Schedule Summary – Release highlights ¶

macOS 11.0 (Big Sur) and Apple Silicon Mac support.

Type Hinting Generics in Standard Collections.

New String Methods to Remove Prefixes and Suffixes.

You should check for DeprecationWarning in your code.

Any thoughts?Īfter posting this question, i have noticed python -version command gives Python 3.7. So far,i did not face any issues, but removed the conda-forge channel from Anaconda to avoid any conflicts. So, question what i should take note when i using python3 some_script.py? what is pros and cons of having this 2 version? So, only the Python3 has uses different version. I would like to know what is difference between python and python3 command?.What is should i keep in mind? basically i prefer the version 3.7.5 Python Now, in the base environment, if execute just python, i get the same python version as system version and if execute python3, i get the version installed by conda-forge.

I did not install purposely any Python version and did not use any pip command either in base environment. I am using 18.04 Ubuntu with Anaconda.Recently i have trying to install OpenCV through conda-forge channel in the base environment.

Conda python version list