bx-py-utils 19

Various Python / Django utility functions

Boxine - bx_py_utils

Various Python / Django utility functions

Quickstart

pip install bx_py_utils

Existing stuff

Here only a simple list about existing utilities. Please take a look into the sources and tests for deeper informations.

models utilities

• approve_workflow - Base model/admin/form classes to implement a model with draft/approve versions workflow
• manipulate.create_or_update() - Similar to django's create_or_update() with benefits
• timetracking.TimetrackingBaseModel() - Base model with "create" and "last update" date time

data types

• data_types.gtin - ModelField, FormField and validators for GTIN/UPC/EAN numbers, more info: data_types/gtin/README.md

test utilities

• datetime.MockDatetimeGenerator() - Mock django timezone.now() with generic time stamps
• datetime.parse_dt() - Handy datetime.strptime() convert
• html_assertion.HtmlAssertionMixin - Unittest mixin class with usefull assertments around Django test client tests
• model_clean_assert.CleanMock() - Context manager to track if model full_clean() was called
• users - Utilities around user/permission setup for tests
• time.MockTimeMonotonicGenerator() - Mock time.monotonic() with generic time stamps

performance analysis

• dbperf.query_recorder.SQLQueryRecorder - Context Manager that records SQL queries executed via the Django ORM

humanize

• humanize.time.human_timedelta() - Converts a time duration into a friendly text representation. (X ms, sec, minutes etc.)
• templatetags.humanize_time.human_duration() - Verbose time since template tag, e.g.: <span title="Jan. 1, 2000, noon">2.0 seconds</span>
• filename.filename2human_name() - Convert filename to a capitalized name
• filename.clean_filename() - Convert filename to ASCII only via slugify

misc

• dict_utils.dict_get() - nested dict get()
• dict_utils.pluck() - Extract values from a dict, if they are present
• environ.cgroup_memory_usage() - Get the memory usage of the current cgroup
• error_handling.print_exc_plus() - Print traceback information with a listing of all the local variables in each frame
• iteration.chunk_iterable() - Create chunks off of any iterable
• processify.processify() - Will execute the decorated function in a separate process
• stacktrace.get_stacktrace() - Returns a filterable and easy-to-process stacktrace

developing

To start developing e.g.:

~$ git clone https://github.com/boxine/bx_py_utils.git
~$ cd bx_py_utils
~/bx_py_utils$ make
help                 List all commands
install-poetry       install or update poetry
install              install via poetry
update               Update the dependencies as according to the pyproject.toml file
lint                 Run code formatters and linter
fix-code-style       Fix code formatting
tox-listenvs         List all tox test environments
tox                  Run pytest via tox with all environments
tox-py36             Run pytest via tox with *python v3.6*
tox-py37             Run pytest via tox with *python v3.7*
tox-py38             Run pytest via tox with *python v3.8*
tox-py39             Run pytest via tox with *python v3.9*
pytest               Run pytest
pytest-ci            Run pytest with CI settings
publish              Release new version to PyPi
makemessages         Make and compile locales message files
start-dev-server     Start Django dev. server with the test project
clean                Remove created files from the test project (e.g.: SQlite, static files)

You can start the test project with the Django developing server, e.g.:

~/bx_py_utils$ make start-dev-server

This is a own manage command, that will create migrations files from our test app, migrate, collectstatic and create a super user if no user exists ;)

If you like to start from stretch, just delete related test project files with:

~/bx_py_utils$ make clean

...and start the test server again ;)

License

MIT. Patches welcome!

Links

• https://pypi.org/project/bx-py-utils/