Description:

alexberutils 0.11.8

AlexBerUtils
AlexBerUtils is collection of the small utilities. See CHANGELOG.md for detail description.
Getting Help
QuickStart
python -m pip install -U alex-ber-utils

Installing from Github
python -m pip install -U https://github.com/alex-ber/AlexBerUtils/archive/master.zip

Optionally installing tests requirements.
python -m pip install -U https://github.com/alex-ber/AlexBerUtils/archive/master.zip#egg=alex-ber-utils[tests]

Or explicitly:
wget https://github.com/alex-ber/AlexBerUtils/archive/master.zip -O master.zip; unzip master.zip; rm master.zip

And then installing from source (see below).
Installing from source
python -m pip install . # only installs "required"

python -m pip install .[tests] # installs dependencies for tests

python -m pip install .[piptools] # installs dependencies for pip-tools

python -m pip install .[fabric] # installs fabric (used in fabs.py)

python -m pip install .[yml] # installs Yml related dependencies
# (used in ymlparsers.py, init_app_conf.py, deploys.py;
# optionally used in ymlparsers_extra.py, emails.py)

python -m pip install .[env] # installs pydotenv (optionally used in deploys.py and mains.py)

Alternatively you install from requirements file:
python -m pip install -r requirements.txt # only installs "required"

python -m pip install -r requirements-tests.txt # installs dependencies for tests

python -m pip install -r requirements-piptools.txt # installs dependencies for pip-tools

python -m pip install -r requirements-fabric.txt # installs fabric (used in fabs.py)

python -m pip install -r requirements-yml.txt # installs Yml related dependencies
# (used in ymlparsers.py, init_app_conf.py, deploys.py;
# optionally used in ymlparsers_extra.py, emails.py)

python -m pip install -r requirements-env.txt # installs pydotenv (optionally used in deploys.py)

Using Docker
alexberkovich/AlexBerUtils:latest contains all AlexBerUtils dependencies.
This Dockerfile is very simple, you can take relevant part for you and put them into your Dockerfile.

Alternatively, you can use it as base Docker image for your project and add/upgrade
another dependencies as you need.
For example:
FROM alexberkovich/alex_ber_utils:latest

COPY requirements.txt etc/requirements.txt

RUN set -ex && \
#latest pip,setuptools,wheel
pip install --upgrade pip setuptools wheel && \
pip install alex_ber_utils
pip install -r etc/requirements.txt

CMD ["/bin/sh"]
#CMD tail -f /dev/null

where requirements.txt is requirements for your project.

From the directory with setup.py
python setup.py test #run all tests

or
pytest

Installing new version
See https://docs.python.org/3.1/distutils/uploading.html
Installing new version to venv
python -m pip uninstall --yes alex_ber_utils
python setup.py clean sdist bdist_wheel
python -m pip install --find-links=./dist alex_ber_utils==0.6.5

##Manual upload
#python setup.py clean sdist upload

Requirements
AlexBerUtils requires the following modules.


Python 3.8+


PyYAML>=6.0.1


packaging>=23.2


Changelog
All notable changes to this project will be documented in this file.
#https://pypi.org/manage/project/alex-ber-utils/releases/
Unreleased
[0.11.8] 01.08.2024
Changed

find_most_similar() and find_most_similar() was fixed for the edge case when no comparison texts are provided.
If no texts are provided, find_most_similar_with_scores() now returns [(some negative number, input_text), 0.0)],
and find_most_similar() returns (some negative number, input_text).
Docstrings of both method were also changed to reflect this change.

[0.11.7] 01.08.2024
Changed

find_most_similar() and find_most_similar() was fixed for the edge case when no comparison texts are provided.
If no texts are provided, find_most_similar_with_scores() now returns [(some negative number, input_text), 1.0)],
and find_most_similar() returns (some negative number, input_text).
Docstrings of both method were also changed to reflect this change.

[0.11.6] 31.07.2024
Changed

_LRUCache and _LFUCache now supports the in operator.
Beforehand the work of the AsyncCache was incorrect.

[0.11.5] 31.07.2024 YANKED
Changed

async_cache() is now support correctly methods.

[0.11.4] 31.07.2024 YANKED
Changed

async_cache() is now support correctly methods.

[0.11.3] 30.07.2024
Added

New class AsyncCache which supports both LFU (Least Frequently Used) and LRU (Least Recently Used) caching policies
with optional Time-to-Live (TTL) for cache entries.
Additional profiling and statistics gathering for cache hits, misses, average, max, and min execution times.
New decorator async_cache() for applying asynchronous caching to a function with configurable caching policy and TTL.
HashableWrapper class: This class wraps an object to make it hashable.
It provides a fallback for objects that do not natively support hashing by using the string representation for hashing.
make_hashable() function: A utility to convert various types of objects into hashable types.
This function handles mappings, iterables, and objects with the __hash__ method.
Non-hashable objects are wrapped in a HashableWrapper to ensure compatibility as dictionary keys or set members.
is_iterable() function: A utility to check if a value is iterable, excluding None, str, and bytes.
is_mapping() function: A utility to check if a value is a mapping (dict-like).
It determines this by checking whether the given value implements the .items() method
and whether that method is callable.

[0.11.2] 30.07.2024
Added


Introduced is_running_in_main_thread() utility function to check if the current thread
is the main thread.


A configuration initializer initConfig() has been added.
You MUST call initConfig() from the MainThread before using lift_to_async().
It initializes the necessary configuration for using the lift_to_async() method.


lift_to_async() primitive ensures seamless execution of async functions in a
synchronous environment, while preserving the context of ContextVar instances.
It makes easier to integrate async calls within existing synchronous codebases.


Changed

In the RLock class, the comparison of the lock owner with the current thread/task was changed
from using the equality operator (==) to the is operator.
This change should not affect the functionality because the __eq__ method was not overridden.

[0.11.1] 23.07.2024
Added


RLock class to provide a reentrant lock that supports both synchronous and asynchronous
operations. This lock ensures fairness by handling acquisition requests in the order they are made,
both for threads and asynchronous tasks. See https://alex-ber.medium.com/a6b9a9021be8 for more details


LockingProxy class to provide a comprehensive locking mechanism, ensuring thread-safe access and operations
for various object types including iterables, async iterables, attributes, and callables. See
https://alex-ber.medium.com/7a7a14021427 for more details.


prof_to_callgrind.sh script for converting .prof files to .callgrind format using Docker.
See https://alex-ber.medium.com/converting-prof-files-to-callgrind-f6ae56fae0d3 for more details.


prof_to_callgrind.py to handle the conversion of profile statistics to callgrind files.
See https://alex-ber.medium.com/converting-prof-files-to-callgrind-f6ae56fae0d3 for more details.


Profiling Script with High-Resolution Timer
This script demonstrates how to set up a cProfile profiler in Python using a high-resolution timer based on time.perf_counter_ns().
import time
import cProfile

# Define a precise timer function using time.perf_counter_ns()
def precise_timer():
return time.perf_counter_ns()

# Create a cProfile.Profile object with the precise timer function
profiler = cProfile.Profile(timer=precise_timer)

# Usage note:
# The profiler is now configured to use the precise_timer function,
# which provides higher resolution timing measurements in nanoseconds.

Misc


pyproject.toml to specify build system requirements and configurations,
ensuring compatibility with setuptools>=42 and wheel.


validate_param() function to check for the presence of required parameters
and raise a ValueError if they are missing.


RootMixin class with an initializer that stops the delegation chain


LockingIterableMixin to provide locking for iterable objects, ensuring thread-safe iteration.


LockingAsyncIterableMixin to provide locking for asynchronous iterable objects, ensuring thread-safe iteration.


LockingAccessMixin to provide locking for attribute access, ensuring thread-safe access to object attributes.


LockingCallableMixin to provide locking for callable objects, ensuring thread-safe execution of callable objects.


LockingDefaultLockMixin to provide a default lock if none is provided during initialization.


LockingBaseLanguageModelMixin to provide locking for BaseLanguageModel objects, ensuring thread-safe access.


LockingDefaultAndBaseLanguageModelMixin to combine default lock and BaseLanguageModel locking.


[0.11.0] 22.06.2024
Added

New module in_memory_similarity_search added.

This module is usable to calculate cosine similarity for small number of vectors.
It has 2 public function and 1 type hint.


find_most_similar() - this function identifies the most similar text to a given
input text from a list of provided texts. It uses an embedding class instance to convert
texts into vectors and calculates the cosine similarity based on the specified Euclidean norm.
The function returns a tuple containing the index and the most similar text.


find_most_similar_with_scores() - this function finds the most similar texts to a given
input text from a list of provided texts and returns their cosine similarity scores.
It uses an embedding class instance to convert texts into vectors and calculates the
similarity based on the specified Euclidean norm.
The function returns a list of tuples, each containing the index, text, and similarity score.


See https://alex-ber.medium.com/in-memory-similarity-search-998582fbb802 for details.
Changed

Removed leftover from multidispatch dependecy.
Rename python3 to python across the documentation.

[0.10.2] 05.05.2024

Lose packaging constraint to packaging>=23.2.
Fixed README.md to include packaging>=23.2.

[0.10.1] 31.05.2024
Changed

Remove no longer supported Python versions 3.6 and 3.7 from setup's classifier.

[0.10.0] 31.05.2024
Changed

Fixed README.md to include packaging<24.0,>=23.2
Minimum library requirement is Python 3.8 now (not 3.9).
Dockerfile's base docker image was changed to be based on Python 3.8 (not 3.9).
importlib-metadata and it's dependency zipp are back. This is backport from Python 3.9.
It is a library that provides access to the metadata of installed packages. It was
originally developed as a backport of the importlib.metadata module introduced in Python 3.8,
allowing users of earlier Python versions to access package metadata in a consistent way.
It is used by build.

[0.9.1] 31.05.2024
Changed

Fixed README.md to reflect changes in 0.9.0.

[0.9.0] 31.05.2024
Changed


Minimum library requirement is Python 3.9 now.


Dockerfile's base docker image was changed to be based on Python 3.9


Some functionality was moved from dropped method_overloading_test.py to importer_test.py


Implementation of inspects.ismethod() and inspects.has_method() was changed.


inspect_test.py was changed. inspects.has_method() now expected to return False on descriptors, including property,
(as it should in the first place).


In Dockerfile setuptools was downgraded from 67.8.0 to 65.6.3.
See https://stackoverflow.com/questions/76043689/pkg-resources-is-deprecated-as-an-api#comment136784284_76044568


In Dockerfile reference to requirements-md.txt was droped.


To requirements.in, req-piptools.txt and req-tests.txt packaging<24.0,>=23.2 was added.


All requirements.txt was regenerated, so version has changed:


importlib-metadata (and it's dependency zipp) were dropped.


bcrypt upgraded from 4.1.1 to 4.1.3.


build from 1.0.3 to 1.2.1.


cryptography from 41.0.7 to 42.0.7.


exceptiongroup from 1.2.0 to 1.2.1.


hiyapyco from 0.5.4 to 0.6.0.


jinja2 from 3.1.2 to 3.1.4.


markupsafe from 2.1.3 to 2.1.5.


paramiko from 3.3.1 to 3.4.0


pip-tools from 7.3.0 to 7.4.1


pluggy from 1.3.0 to 1.5.0


pycparser 2.21 to 2.22.


pyopenssl from 23.3.0 to 24.1.0.


pyproject-hooks from 1.0.0 to 1.1.0.


python-dotenv from 1.0.0 to 1.0.1


wheel from 0.42.0 to 0.43.0


(minor) Import to dropped enums.py was removed from parsers_test.py


Added

inspects.resolve_function_args() - maps both explicit and default arguments of a function call by parameter name.
It merges args and kwargs, taking into account default values from func.
See https://alex-ber.medium.com/my-inspect-module-aa2d311246cb for more details.
inspects.update_function_defaults() - decorator to change and remove default value.
See https://alex-ber.medium.com/my-inspect-module-aa2d311246cb for more details.
pprint.py module. This module effectively changes the default values of the standard pprint.pprint module. Intended Usage:
See https://alex-ber.medium.com/my-pprint-module-f25a7b695e5f for more details.

Instead of:
from pprint import pprint

use
from alexber.utils.pprint import pprint

The defaults are:

indent: 4
width: 120
depth: None
stream: None
compact: False
sort_dicts: False
underscore_numbers: False

See docstring of pprint.py module for more details.
Removed

Optional dependency alex-ber-utils[md] was removed. Unit-tests for multidispatch was removed.
Also files req-md.txt and requirements-md.txt was deleted.
Module enums was removed. It does monkey-patching to standard library's enums, that breaks them in Python 3.9+.

[0.8.0] 04.12.2023
Changed

In setup.cfg flag mock_use_standalone_module
was changed to false (to use unittest.mock).
Many version of the packages in extra was updated to latest:
python-dotenv from 0.15.0 to 1.0.0.
MarkupSafe is downgraded from 2.1.3 to 2.0.1
bcrypt is upgraded from 3.2.0 to 4.1.1
cffi is upgraded from 1.14.5 to 1.16.0
cryptography is upgraded from 38.0.4 to to 41.0.7
fabric is upgraded from 2.5.0 to 3.2.2
invoke is upgraded from 1.7.3 to 2.2.0
paramiko is upgraded from 2.7.2 to 3.3.1
pycparser is upgraded from 2.20 to 2.21
PyNaCl is upgraded from 1.3.0 to 1.5.0
HiYaPyCo is upgraded from 0.5.1 to 0.5.4

Added

new extra-group, with name requirements-piptools.txt is added.
alexber.utils.props.lazyproperty is added. TODO: add test for it
New file requirements.in that have all high-level dependecies together.
New file requirements.all that have pinned low-level dependecies resolution.

Removed

mock package was removed. pytest will use unittest.mock. See Changed
p.1 above.
six was removed.

[0.7.0] - 04-08-2023
Changed

Upgrade pyparsing==2.4.7 to 3.1.1.
Upgrade cryptography from 3.4.7 to 41.0.3.
Upgrade invoke from 1.4.1 to 1.7.3.
Upgrade six from 1.15.0 to 1.16.0.
Upgrade colorama from 0.4.3 to 0.4.4.
Change declaration of namespace to declare_namespace() mechanism.

Added

Explicit dependency on pyOpenSSL==22.1.0 (lowest version where cryptography version is
pinned). cryptography's and pyOpenSSL's version change should be in sync.

[0.6.6] - 13-06-2021
Added

stdLogging module. The main function is initStream(). This is Thin adapter layer that redirects stdout/stderr
(or any other stream-like object) to standard Python's logger. Based on
https://github.com/fx-kirin/py-stdlogging/blob/master/stdlogging.py See https://github.com/fx-kirin/py-stdlogging/pull/1
Quote from https://stackoverflow.com/questions/47325506/making-python-loggers-log-all-stdout-and-stderr-messages :
"But be careful to capture stdout because it's very fragile". I decided to focus on redirecting stderr only to the
logger. If you want you can also redirect stdout, by making 2 calls to initStream() package-level method.
But, because of https://unix.stackexchange.com/questions/616616/separate-stdout-and-stderr-for-docker-run it is
sufficient only to do it for stderr for me.
See [https://alex-ber.medium.com/stdlogging-module-d5d69ff7103f] for details.

Changed

Doockerfiles base-image. Now, you can transparentely switch betwee AMD64 to ARM 64 proccessor.
cffi dependency from 1.14.3 to 1.14.5.
cryptography dependency from 3.1.1 to 3.4.7.

[0.6.5] - 12-04-2021
Added


FixRelCwd context-manager in mains module - This context-manager temporary changes current working directory to
the one where relPackage is installed. What if you have some script or application that use relative path and you
want to invoke in from another directory. To get things more complicated. maybe your “external” code also use
relative path, but relative to another directory.
See [https://alex-ber.medium.com/making-more-yo-relative-path-to-file-to-work-fbf6280f9511] for details.


GuardedWorkerException context-manager in mains module - context manager that mitigate exception propogation
from another process. It is very difficult if not impossible to pickle exceptions back to the parent process.
Simple ones work, but many others don’t.
For example, CalledProcessError is not pickable (my guess, this is because of stdout, stderr data-members).
This means, that if child process raise CalledProcessError that is not catched, it will propagate to the parent
process, but the propagation will fail, apparently because of bug in Python itself.
This cause pool.join() to halt forever — and thus memory leak!
See [https://alex-ber.medium.com/exception-propagation-from-another-process-bb09894ba4ce] for details.


join_files() function in files module - Suppose, that you have some multi-threaded/multi-process application
where each thread/process creates some file (each thread/process create different file)
and you want to join them to one file.
See [https://alex-ber.medium.com/join-files-cc5e38e3c658] for details.


Changed


fixabscwd() function in mains module - minour refactoring - moving out some internal helper function for reuse
in new function.


Base docker image version to alexberkovich/alpine-anaconda3:0.2.1-slim.
alexberkovich/alpine-anaconda3:0.1.1 has some minor changes relative to alexberkovich/alpine-anaconda3:0.1.1.
See [https://github.com/alex-ber/alpine-anaconda3/blob/master/CHANGELOG.md] for details.


Updated
Documentation

See [https://github.com/alex-ber/AlexBerUtils/issues/8] Config file from another directory is not resolved
(using argumentParser with --general.config.file can't be passed to init_app_conf.parse_config())

[0.6.4] - 12/12/2020
Changed


Base docker image version to alexberkovich/alpine-anaconda3:0.1.1-slim.
alexberkovich/alpine-anaconda3:0.1.1 has some minor changes relative to alexberkovich/alpine-anaconda3:0.1.0.
See [https://github.com/alex-ber/alpine-anaconda3/blob/master/CHANGELOG.md] for details.
alexberkovich/alpine-anaconda3:0.1.1-slim is "slim" version of the same docker image, most unused packaged are removed.


update versions to pip==20.3.1 setuptools==51.0.0 wheel==0.36.1


Removed

Script check_d.py

[0.6.3] - 18/11/2020
Changed

Base docker image version to alexberkovich/alpine-anaconda3:0.1.0, it has fix for potential security risk: Git was changed
not to store credential as plain text, but to keep them in memory for 1 hour,
see https://git-scm.com/docs/git-credential-cache

Updated
Documentation

My deploys module [https://medium.com/analytics-vidhya/my-deploys-module-26c5599f1b15 for documentation]
is updated to contain fix_retry_env() function in mains module.

Added
Documentation

fix_retry_env() function in mains module. [https://alex-ber.medium.com/make-path-to-file-on-windows-works-on-linux-402ed3624f66]

[0.6.2] - 17/11/2020
Deprecation

method_overloading_test.py is deprecated and will be removed once AlexBerUtils will support
Python 3.9. It will happen approximately at 01.11.2021.

This test uses multidispatch project that wasn't updated since 2014.
In Python 3.8 it has following warning:
multidispatch.py:163: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3, and in 3.9 it will stop working from collections import MutableMapping
Added

class OsEnvrionPathRetry, function fix_retry_env() to mains module.

Changed

OsEnvrionPathExpender - refactored, functionality is preserved.

[0.6.1] - 16/11/2020
Added


optional Dockerfile


optional .env.docker for reference.


Support of Python 3.8 is validated, see https://github.com/alex-ber/AlexBerUtils/issues/5


Email formatting changed in Python 3.8, see https://github.com/alex-ber/AlexBerUtils/issues/7


Note that it is possible that 7bit will be replaced with 8bit as Content-Transfer-Encoding,
that I'm considering as ok.


check_all.py to run all unit test.


check_d.py for sanity test.


.dockerignore


requirements*.txt - dependencies version changed, see https://github.com/alex-ber/AlexBerUtils/issues/6


Because of pytest upgrade conftest.py was changed:
pytest_configure() was added to support dynamically used marks.


In ymlparsers_test.py deprecation warning removed (it will be error in Python 3.9)
collections.Mapping was changed to collections.abc.Mapping.


Changed

README.MD added section about Docker usage.
setup.py to indicate support of Python 3.8

[0.5.3] - 10/09/2020
Changed

alexber.utils.emails.initConfig is fixed. Before this default variables where ignored.
2 Unit tests for init_app_conf are fixed. These fix are minors.

Documentation

importer module [https://medium.com/analytics-vidhya/how-to-write-easily-customizable-code-8b00b43406b2]
fixabscwd() function in mains module. [https://medium.com/@alex_ber/making-relative-path-to-file-to-work-d5d0f1da67bf]
fix_retry_env() function in mains module. [https://alex-ber.medium.com/make-path-to-file-on-windows-works-on-linux-402ed3624f66]
My parser module [https://medium.com/analytics-vidhya/my-parser-module-429ed1457718]
My ymlparsers module [https://medium.com/analytics-vidhya/my-ymlparsers-module-88221edf16a6]
My major init_app_conf module [https://medium.com/analytics-vidhya/my-major-init-app-conf-module-1a5d9fb3998c]
My deploys module [https://medium.com/analytics-vidhya/my-deploys-module-26c5599f1b15]
My emails module [https://medium.com/analytics-vidhya/my-emails-module-3ad36a4861c5]
My processinvokes module [https://medium.com/analytics-vidhya/my-processinvokes-module-de4d301518df]

[0.5.2] - 21/06/2020
Added

path() function in mains module. For older Python version uses
importlib_resources module. For newer version built in importlib.resources.
load_env() function in mains module. Added kwargs forwarding. if dotenv_path or stream is present it will be used.
if ENV_PCK is present, dotenv_path will be constructed from ENV_PCK and ENV_NAME.
Otherwise, kwargs will be forwarded as is to load_dotenv.
fix_env() function in mains module. For each key in ENV_KEYS, this method prepends full_prefix to os.environ[key].
full_prefix is calculated as absolute path of __init__.py of ENV_PCK.

Changed
processinvokes function run_sub_process - documentation typo fixed.
Lower Python version to 3.6.
[0.5.1] - 06-05-2020
Added


mains module explanation article https://medium.com/@alex_ber/making-relative-path-to-file-to-work-d5d0f1da67bf is published.


fabs module. It adds cp method to fabric.Connection.


This method is Linux-like cp command. It copies single file to remote (Posix) machine.


Spited dependency list for setup.py req.txt (inexact versions, direct dependency only) and for
reproducible installation requirements.txt (exact versions, all, including transitive dependencies).


Added req-fabric.txt, requirements-fabric.txt - Fabric, used in fabs module.


Added req-yml.txt, requirements-yml.txt - Yml-related dependencies, used in ymlparsers.py
and in init_app_conf.py, deploys.py; optionally used in ymlparsers_extra.py, emails.py.


Main dependency is HiYaPyCo. I'm using feature that is availlable in the minimal version.
HiYaPyCo depends upon PyYAML and Jinja2. Limitations for Jinja2 is from HiYaPyCo project.


Added req-env.txt, requirements-env.txt - pydotenv, optionally used in deploys.py.


Added inspects.has_method(cls, methodName). Check if class cls has method with name methodName directly,
or in one of it's super-classes.


Added pareser.parse_sys_args function parses command line arguments.


Added ymlparsers module - load/safe_dump a Hierarchical Yml files. This is essentially wrapper arround HiYaPyCo project with streamlined
and extended API and couple of work-arrounds.


Note: this module doesn't use any package-level variables in hiYaPyCo module, including hiYaPyCo.jinja2env.
This module do use Jinja2's Environment.
It also has another defaults for load/safe_dump methods.
They can be overridden in initConfig() function.
safe_dump() method supports simple Python objects like primitive types (str, integer, etc), list, dict, OrderedDict.
as_str()- convenient method for getting str representation of the data,
for example of dict.
DisableVarSubst - use of this context manager disables variable substation in the load() function.
initConfig - this method reset some defaults. If running from the MainThread, this method is idempotent.

Added init_app_conf major module.

The main function is parse_config. This function parses command line arguments first.
Than it parse yml files. Command line arguments overrides yml files arguments.
Parameters of yml files we always try to convert on best-effort basses.
Parameters of system args we try convert according to implicit_convert param.
If you supply implicit_convert=True, than mask_value() will be applied to the flat map (first parameter).
Otherwise, implicit_convert wiil have the value that was set in intiConfig(). By default it is True.
Command line key --general.profiles or appropriate key default yml file is used to find 'profiles'.
Let suppose, that --config_file is resolved to config.yml.
If 'profiles' is not empty, than it will be used to calculate filenames
that will be used to override default yml file.
Let suppose, 'profiles' resolved to ['dev', 'local']. Than first config.yml
will be loaded, than it will be overridden with config-dev.yml, than
it will be overridden with config-local.yml.
At last, it will be overridden with system args.
This entry can be always be overridden with system args.
ymlparsers and parser modules serves as Low-Level API for this module.
mask_value() implemented as a wrapper to parsers.safe_eval() method with support for boolean
variables. This implementation is used to get type for arguments that we get from system args.
This mechanism can be easily replaced with your own one.
to_convex_map() This method receives dictionary with 'flat keys', it has simple key:value structure
where value can't be another dictionary.
It will return dictionary of dictionaries with natural key mapping,
optionally, entries will be filtered out according to white_list_flat_keys and,
optionally, value will be implicitly converted to appropriate type.
In order to simulate dictionary of dictionaries 'flat keys' compose key from outer dict with key from inner dict
separated with dot.
For example, 'general.profiles' 'flat key' corresponds to convex map with 'general' key with dictionary as value
that have one of the keys 'profiles' with corresponding value.
If you supply implicit_convert=True, than mask_value() will be applied to the values of the received flat dictionary.
Otherwise, implicit_convert wiil have the value that was set in intiConfig(). By default it is True.
merge_list_value_in_dicts - merges value of 2 dicts. This value represents list of values.
Value from flat_d is roughly obtained by flat_d[main_key+'.'+sub_key].
Value from d is roughly obtained by d[main_key][sub_key].
If you supply implicit_convert=True, than mask_value() will be applied to the flat map (first parameter).
Otherwise, implicit_convert wiil have the value that was set in intiConfig(). By default it is True.
initConfig - you can set default value of implicit_convert. By default it is True.
This parameters is used if implicit_convert wasn't explicitly supplied. This method is idempotent.

Added deploys module.
This module is usable in your deployment script. See also fabs module.

This method use parsers, ymlparsers, init_app_confas it's low-level API.init_app_conf` usage is limited.
The main function is load_config(). It is simplified method for parsing yml configuration file with optionally
overrided profiles only. See init_app_conf.parse_config() for another variant.
split_path - Split filename in 2 part parts by split_dirname. first_part will ends with split_dirname.
second_part will start immediately after split_dirname.
add_to_zip_copy_function - Factory method that returns closure that can be used as copy_function param in
shutil.copytree().

Added emails module.
This module contains extensions of the logging handlers.
This module optionally depends on ymlparseser module.
It is better to use EmailStatus context manager with configured emailLogger.
It is intended to configure first your emailLogger with OneMemoryHandler (together with SMTPHandler).
Than the code block that you want to aggregate log messages from is better to be enclosed with EmailStatus
context manager.

alexber.utils.emails.SMTPHandler is customization of logging.handlers.SMTPHandler. It's purpose is to connect to
SMTP server and actually send the e-mail. Unlike logging.handlers.SMTPHandler this class expects for record.msg to be built EmailMessage.
You can also change use of underline SMTP class to SMTP_SSL, LMTP, etc.
This implementation is thread-safe.
alexber.utils.emails.OneMemoryHandler is variant of logging.handlers.MemoryHandler. This handler aggregates
log messages until FINISHED log-level is received or application is going to terminate abruptly (see docstring
of calc_abrupt_vars() method for the details) and we have some log messages in the buffer. On such event
all messages (in the current Thread) are aggregated to the single EmailMessage. The subject of the EmailMessage
is determined by get_subject() method.
If you want to change delimeters used to indicate variable declaration inside template, see docstring of the
get_subject() method.
It is better to use EmailStatus context manager with configured emailLogger. See docstring of EmailStatus.
This implementation is thread-safe.
alexber.utils.emails.EmailStatus - if contextmanager exits with exception (it fails), than e-mail with
subject formatted with faildargs and faildkwargs will be send.
Otherwise, e-mail with subject formatted with successargs and successkwargs will be send.
All messages (in the current Thread) will be aggregated to one long e-mail with the subject described in
OneMemoryHandler.get_subject() method.
alexber.utils.emails.initConfig - this method reset some defaults. This method is idempotent.
By default, SMTP class from smtplib is used to send actual e-mail. You can change it to SMTP_SSL, LMTP,
or another class by specifying default_smpt_cls_name.
You can also specified default port for sending e-mails.
processInvokes module has one primary function - run_sub_process() This method run subprocess and logs it's out
to the logger. This method is sophisticated decorator to subprocess.run(). It is useful, when your subprocess
run's a lot of time and you're interesting to receive it's stdout and stderr. By default, it's streamed to log.
You can easily customize this behavior, see initConig() method.
initConig() This method can be optionally called prior any call to another function in this module. You can use your
custom class for the logging. For example, FilePipe.
Changed


Spited dependency list for setup.py req.txt (inexact versions, direct dependency only) and for
reproducible installation requirements.txt (exact versions, all, including transitive dependencies).


README.md changed, added section 'Alternatively you install install from requirements file:'.
Some other misc changed done.


CHANGELOG.md version 0.4.1 misc changes.


Misc improvement in unit tests.


Fixed parser.safe_eval - safe_eval('%(message)s') was blow up, now it returns value as is.
See https://github.com/alex-ber/AlexBerUtils/issues/2


Enhanced importer.importer - added support for PEP 420 (implicit Namespace Packages).
Namespace packages are a mechanism for splitting a single Python package across multiple directories on disk.
When interpreted encounter with non-empty path attribute it adds modules found in those locations
to the current package.
See https://github.com/alex-ber/AlexBerUtils/issues/3


In all documentation refference to pip3 was changed to python3 -m pip


[0.4.1] - 2020-04-02
BREAKING CHANGE I highly recommend not to use 0.3.X versions.
Removed

module warns is droped

Changed

Limitation::

mains module wasn't tested with frozen python script (frozen using py2exe).

module mains is rewritten. Function initConf is dropped entirely.
module mains now works with logger and with warnings (it was wrong decision to work with warnings).

[0.3.4] - 2020-04-02
Changed

CHANGELOG.md fixed
warns module bug fixed, now warnings.warn() works.
FixabscwdWarning is added to simplify warnings disabling.
Changing how mains module use warns.

[0.3.3] - 2020-04-02
Changed

CHANGELOG.md fixed

[0.3.2] - 2020-04-01
Changed

To REAMDE.md add Installing new version section
Fix typo in REAMDE.md (tests, not test).
Fixing bug: now, you're able to import package in the Python interpreter (setups.py fixed)
Fixing bug: warns module now doesn't change log_level in the preconfigured logger in any cases.
BREAKING CHANGE: Inmains module method warnsInitConfig() was renamed to mainInitConfig()
Also singature was changed.
mains module minor refactored.

Added

Unit tests are added for warns module
Unit tests are added for mains module

[0.3.1] - 2020-04-01
Changed

Tests minor improvements.
Excluded tests, data from setup.py (from being installed from the sdist.)
Created MANIFEST.in

Added

warns module is added:

It provides better integration between warnings and logger.
Unlike logging._showwarning() this variant will always go through logger.
warns.initConfig() has optional file parameter (it's file-like object) to redirect warnings.
Default value is sys.stderr.
If logger for log_name (default is py.warnings) will be configured before call to showwarning() method,
than warning will go to the logger's handler with log_level (default is logging.WARNING).
If logger for log_name (default is py.warnings) willn't be configured before call to showwarning() method,
than warning will be done to file (default is sys.stderr) with log_level (default is logging.WARNING).

main module is added:

main.fixabscwd() changes os.getcwd() to be the directory of the __main__ module.
main.warnsInitConfig() reexports warns.initConfig() for convenience.
Added

Tests for alexber.utils.thread_locals added.

[0.2.5] - 2019-05-22
Changed

Fixed bug in UploadCommand, git push should be before git tag.

[0.2.4] - 2019-05-22
Changed

Fixed bug in setup.py, incorrect order between VERSION and UploadCommand (no tag was created on upload)

[0.2.1] - 2019-05-22
Changed

setup url fixed.
Added import of Enum to alexber.utils package.

[0.2.0] - 2019-05-22
Changed

setup.py - keywords added.

[0.1.1] - 2019-05-22
Changed

README.md fixed typo.

[0.1.0] - 2019-05-22
Changed

alexber.utils.UploadCommand - bug fixed, failed on git tag, because VERSION was undefined.

[0.0.1] - 2019-05-22
Added


alexber.utils.StrAsReprMixinEnum - Enum Mixin that has str() equal to repr().


alexber.utils.AutoNameMixinEnum- Enum Mixin that generate value equal to the name.


alexber.utils.MissingNoneMixinEnum - Enum Mixin will return None if value will not be found.


alexber.utils.LookUpMixinEnum - Enim Mixin that is designed to be used for lookup by value.
If lookup fail, None will be return. Also, str() will return the same value as repr().


alexber.utils.threadlocal_var, get_threadlocal_var, del_threadlocal_var.
Inspired by https://stackoverflow.com/questions/1408171/thread-local-storage-in-python


alexber.utils.UploadCommand - Support setup.py upload.
UploadCommand is intented to be used only from setup.py
It's builds Source and Wheel distribution.
It's uploads the package to PyPI via Twine.
It's pushes the git tags.


alexber.utils.uuid1mc is is a hybrid between version 1 & version 4. This is v1 with random MAC ("v1mc").
uuid1mc() is deliberately generating v1 UUIDs with a random broadcast MAC address.
The resulting v1 UUID is time dependant (like regular v1), but lacks all host-specific information (like v4).
Note: somebody reported that ran into trouble using UUID1 in Amazon EC2 instances.


alexber.utils.importer.importer - Convert str to Python construct that target is represented.


alexber.utils.importer.new_instance - Convert str to Python construct that target is represented.
args and kwargs will be passed in to appropriate new() / init() / init_subclass() methods.


alexber.utils.inspects.issetdescriptor - Return true if the object is a method descriptor with setters.
But not if ismethod() or isclass() or isfunction() are true.


alexber.utils.inspects.ismethod - Return false if object is not a class and not a function.
Otherwise, return true iff signature has 2 params.


alexber.utils.parsers.safe_eval - The purpose of this function is convert numbers from str to correct type.
This function support convertion of built-in Python number to correct type (int, float)
This function doesn't support decimal.Decimal or datetime.datetime or numpy types.


alexber.utils.parsers.is_empty - if value is None returns True.
if value is empty iterable (for example, empty str or emptry list),returns true otherwise false.
Note: For not iterable values, behaivour is undefined.


alexber.utils.parsers.parse_boolean - if value is None returns None.
if value is boolean, it is returned as it is.
if value is str and value is equals ignoring case to "True", True is returned.
if value is str and value is equals ignoring case to "False", False is returned.
For every other value, the answer is undefined.


alexber.utils.props.Properties - A Python replacement for java.util.Properties class
This is modelled as closely as possible to the Java original.
Created - Anand B Pillai abpillai@gmail.com.
Update to Python 3 by Alex.
Also there are some tweeks that was done by Alex.

License

For personal and professional use. You cannot resell or redistribute these repositories in their original state.

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