SamatsWiki

• Diff for "ProgrammingLanguages/Python"

CodingStyle/Python is another relevant page. Also:

Development packages for Debian

Current for Ubuntu 16.04.

fabric
python-pip
python3-venv
python3-pip
python-wheel-common

cffi and numpy

https://github.com/SimonSapin/azureblur/tree/master/azureblur: Example of using cffi to interact w/ a C++ class.

python - How do I convert a numpy ND-array to a CFFI C++ array and back again? - Stack Overflow

python - Why is cffi so much quicker than numpy? - Stack Overflow

Neat Web frameworks

aspen.io. Filesystem-based dispatch library. Used by Liberapay.

Neat packages

nvbn/py-backwards: Python transcompiler. Lets you use Python 3.6 features in older versions, as old as Python 2.7.

asottile/future-fstrings. Allows formatted string literals (AKA f-strings) in Python 2.7–3.5 by hacking built-in codecs.

arrow (relatively mature) and moment, a port of Moment.js, are date-handling libraries with a better API than Python's stdlib.

JSON

Parsing JSON without pulling your hair out…

glom

dpath

jq

jmespath: used by awscli

jsons: Serialize from and to Python objects, works with dataclasses and typed Python.

https://github.com/ltworf/typedload

json2python-models: Create dataclasses automatically from JSON files

Logging

Colored logging:

• loguru: Easy Python logging. Used by FlexGet.

• rich's logging handler: part of rich formatting library

Compilers

Nuitka: Python native-code compiler, binary will still link to libpython.

Typing

ambv/retype: Re-applies type annotations from *.pyi stubs to a codebase.

For reference:

• PEP-591: Final and @final

• PEP-589: Typing for nested dictionaries

Porting projects from Python 2 to Python 3

Backports

subprocess

python-subprocess32: Backport of Python 3.2 subprocess module to 2.7. Use:

if os.name == 'posix' and sys.version_info[0] < 3:
    import subprocess32 as subprocess
else:
    import subprocess

Can serve as a complete replacement for Python 2.7's subprocess module.

2to3 libraries

• python-future

• six, along with python-modernize

Guides

• The Conservative Python 3 Porting Guide

• Porting Python 2 Code to Python 3

Notes

• Sorting and using Python 3.2's funcutils.cmp_to_key()

Packaging

requirements.txt

PyYAML ~= 5.3  # means >= V.N, == V.*

For more information, see:

• pip documentation: Example requirements file

• PEP 440: Version Identification and Dependency Specification: Compatible release