Python 3.8 Programming Language

What’s New In Python 3.8

Summary – Release highlights

New Features

Assignment expressions

Positional-only parameters

Parallel filesystem cache for compiled bytecode files

Debug build uses the same ABI as release build

f-strings now support = for quick and easy debugging

PEP 587: Python Initialization Configuration

Vectorcall: a fast calling protocol for CPython

Pickle protocol 5 with out-of-band data buffers

Other Language Changes

New Modules

Improved Modules

Optimizations

Build and C API Changes

Deprecated

API and Feature Removals

Porting to Python 3.8

Changes in Python behavior

Changes in the Python API

Changes in the C API

CPython bytecode changes

Demos and Tools

ast

asyncio

builtins

collections

ctypes

functools

datetime

gettext

inspect

 io

gc

gzip

idlelib and IDLE

json.tool

math

mmap

multiprocessing

os

os.path

ncurses

pathlib

pickle

plistlib

py_compile

socket

shlex

shutil

ssl

statistics

sys

tarfile

threading

tokenize

tkinter

time

typing

unicodedata

unittest

venv

weakref

xml