Changelogs » Alex-ber-utils

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  - `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 `` of ENV_PCK.
  ``processinvokes`` function run_sub_process - documentation typo fixed.
  Lower Python version to 3.6.


  - `mains` module explanation article 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 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
  and in,; optionally used in,
  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
  - 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 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_conf` as 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
  - 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 from smtplib 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 ``. 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.
  - Spited dependency list for req.txt (inexact versions, direct dependency only) and for
  reproducible installation requirements.txt (exact versions, all, including transitive dependencies).
  - changed, added section 'Alternatively you install install from requirements file:'.
  Some other misc changed done.
  - 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.
  - 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.
  - In all documentation refference to `pip3` was changed to `python3 -m pip`


**BREAKING CHANGE** I highly recommend not to use 0.3.X versions.
  - module `warns` is droped
  - *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).


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


  - fixed


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


  - Tests minor improvements.
  - Excluded tests, data from (from being installed from the sdist.)
  - Created
  - `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.
  - Tests for alexber.utils.thread_locals added.


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


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


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


  - - keywords added.


  - fixed typo.


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


  - 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
  - alexber.utils.UploadCommand -  Support upload.
  UploadCommand is intented to be used only from
  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 <>.
  Update to Python 3 by Alex.
  Also there are some tweeks that was done by Alex.