What’s New in Python 3.8? | Best New Features of Python 3.8

The Best New Features of Python 3.8

The Python 3.8 is the latest version and it used for scripting and automation to machine learning and web development.

Let’s explains one-by-one the Python 3.8 new features -

=> Assignment expressions

if (n := len(a)) > 10:

    print(f"List is too long ({n} elements, expected <= 10)")

            

=> Positional-only parameters

def pow(x, y, z=None, /):

    r = x**y

    if z is not None:

        r %= z

    return r

=> Parallel filesystem cache for compiled bytecode files

=> Debug build uses the same ABI as release build

=> A fast calling protocol for CPython

=> The subprocess.Popen() can now use os.posix_spawn() in some cases for better performance

=> The statistics.mode() function no longer raises an exception when given multimodal data

=> f-strings now support = for quick and easy debugging

x = 3

print(f'{x*9 + 15=}')

=> Improved Modules - ast, asyncio, builtins, collections, ctypes, functools, datetime, gettext, inspect, idlelib and IDLE, and json.tool

=> Python Initialization providing finer control on the whole configuration and better error reporting.

=> Python New Structures:

PyConfig

PyPreConfig

PyStatus

PyWideStringList

=> Python New functions:

PyConfig_Clear()

PyConfig_InitIsolatedConfig()

PyConfig_InitPythonConfig()

PyConfig_Read()

PyConfig_SetArgv()

PyConfig_SetBytesArgv()

PyConfig_SetBytesString()

PyConfig_SetString()

PyPreConfig_InitIsolatedConfig()

PyPreConfig_InitPythonConfig()

PyStatus_Error()

PyStatus_Exception()

PyStatus_Exit()

PyStatus_IsError()

PyStatus_IsExit()

PyStatus_NoMemory()

PyStatus_Ok()

PyWideStringList_Append()

PyWideStringList_Insert()

Py_BytesMain()

Py_ExitStatusException()

Py_InitializeFromConfig()

Py_PreInitialize()

Py_PreInitializeFromArgs()

Py_PreInitializeFromBytesArgs()

Py_RunMain()

=> The Py_DEPRECATED() macro has been implemented for MSVC. The macro now must be placed before the symbol name.

Example:

Py_DEPRECATED(3.8) PyAPI_FUNC(int) Py_OldFunction(void);

Explore in detail -
https://docs.python.org/3.8/whatsnew/3.8.html

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About Mariano

I'm Ethan Mariano a software engineer by profession and reader/writter by passion.I have good understanding and knowledge of AngularJS, Database, javascript, web development, digital marketing and exploring other technologies related to Software development.