ut-arr 1.3.8.20251001

Utilities for Arrays

ut_arr

Overview

Utilities to manage Arrays

Installation

Package ut_array can be installed from PyPI or Anaconda.

To install with pip:

$ python -m pip install ut_arr

Package logging

(c.f.: Appendix: Package Logging)

Package files

Classification

The Files of Package ut_arr could be classified into the follwing file types (c.f.: Appendix: Python Terminology):

1. Special files

   1. py.typed

2. Special modules

   1. __init__.py

   2. __version__.py

3. Modules

   1. Modules for dictionaries

      1. dic.py

   2. Modules for dictionaries of arrays

      1. doaod.py

      2. doa.py

   3. Modules for dictionaries of callables

      1. doc.py*

   4. Modules for dictionaries of dataframes

      1. dopddf.py

Package Modules

Overview

The Modules of Package ut_arr could be classified into the follwing module types:

1. Modules for arrays

2. Modules for arrays of arrays

3. Modules for arrays of basic objects

Modules for arrays

The Module type Modules for arrays contains only the module arr.py.

Module: arr.py

The Module arr.py contains only the static class Arr.

Class: Arr

The Class Arr contains the following methods:

Arr Methods

Arr methods

Name	Short description
append	Append item to the array
append_unique	Append item to the array if the item is not in the array.
apply_function	Apply function with the keyword arguments to all non empty array elements.
apply_replace	Replace source by target to all array elements.
apply_str	Apply function str to all non empty array elements.
encode	Join array elements with blank separator and encode result string.
ex_intersection	Intersection of first array with second array.
extend	Extend first array with second array.
get_key_value	Get next array item value without line feed for the given index or the given default value if the item value is identical to the given value without line feeds.
get_item	Extend array of dicts. with non empty dict.
get_text	Extend array of dicts. with non empty dict.
get_text_spli	Extend array of dicts. with non empty dict.
intersection	Extend array of dicts. with non empty dict.
is_empty	Extend array of dicts. with non empty dict.
is_not_empty	Extend array of dicts. with non empty dict.
join_not_none	Extend array of dicts. with non empty dict.
length	Extend array of dicts. with non empty dict.
merge	Extend array of dicts. with non empty dict.
sh_dic_from_keys_values	Extend array of dicts. with non empty dict.
sh_dic_zip	Join elements of array of dicts.
sh_item	Show True if an element exists in the array
sh_item_if	Show True if an element exists in the array
sh_item_lower	Show True if an element exists in the array
sh_item_str	Show True if an element exists in the array
sh_item0	Deduplicate array of dicts.
sh_item0_if	Deduplicate array of dicts.
sh_subarray	Deduplicate array of dicts.
to_dic	Show arr. of arrays created from arr. of dict. by using any key- and all value-arrays
yield_items	Convert array of dictionaries to array of arrays controlled by key- and value-switch.

Modules for array of arrays

The Module type Modules for array of arrays contains only the module aoa.py.

Module: aoa.py

The Module aoa.py contains only the static class AoA.

aoa.py Class: AoA

The static Class AoA contains the subsequent methods.

AoA Methods

AoA Methods

Name	Short description
concatinate	Concatinate all arrays of array of arrays
csv_writerows	Write array of arrays to csv file
nvl	Replace empty array of arrays
to_aod	Convert array of arrays to array of dictionaries using an array of keys
to_arr_from_2cols	Convert array of arrays to array using a 2-dimensional index array
to_doa_from_2cols	Convert array of arrays to dictionary of arrays using a 2-dimensionl index array
to_dic_from_2cols	Convert array of arrays to dictionary by using a 2-dimensional index array

AoA Method: concatinate

Description

Concatinate all arrays of array of arrays.

Parameter

Parameter of: AoA Method: concatinate

Name	Type	Default	Description
aoa	TyAoA		Array of arrays

Return Value

Return Value of: AoA Method: concatinate

Name	Type	Description
arr_new	TyArr	new array

AoA Method: csv_writerows

Description

Write Array of Arrays to Csv file defined by the path string using the function “writerows” of module “csv”.

Parameter

Parameter of: AoA Method: csv_writerows

Name	Type	Description
aoa	TyAoA	Array of arrays
path	TyPath	Path string
kwargs	TyDic	Keyword aruments

Return Value

Return Value of: AoA Method: csv_writerows

Name	Type	Description
	None

AoA Method: nvl

Description

Return the empty array if the Array of Arrays is None.

Parameter

Parameter of: AoA Method nvl

Name	Type	Default	Description
aoa	TyAoA		Array of arrays

Return Value

Return Value of: AoA Method: nvl

Name	Type	Description
aoa_new	TyAoA	new Array of arrays

AoA Method: to_aod

Description

Convert array of arrays to array of Dictionaries.

Parameter

Parameter of: AoA Method: to_aod

Name	Type	Default	Description
aoa	TyAoA		Array of arrays
keys	TyArr		Array of keys

Return Value

Return Value of: AoA Method: to_aod

Name	Type	Description
aod	TyAoD	array of dictionaries

AoA Method: to_arr_from_2cols

Description

Convert Array of Arrays to unique array with distinct elements by selecting 2 columns of each Array as elements of the new array using a 2-dimensional index-array.

Parameter

Parameter of: AoA Method: to_arr_from_2cols

Name	Type	Default	Description
aoa	TyAoA		Array of arrays
a_ix	TyAoI		Array of integer

Return Value

Return Value of: AoA Method: to_arr_from_2cols

Name	Type	Description
arr	TyArr	Array

AoA Method: to_doa_from_2cols

Description

Convert array of arrays to dictionary of unique arrays (array with distinct elements)

1. Select 2 columns of each array as key-, value-candidates of the new dictionary using a 2-dimensional index-array.

2. If the new key exists then the new value extends the key value as unique array,

# otherwise

the new value is assigned as unique array to the key.

Parameter

Parameter of: AoA Method: to_doa_from_2cols

Name	Type	Default	Description
aoa	TyAoA		Array of arrays
a_ix	TyAoI		Array of integer

Return Value

Return Value of: AoA Method: to_doa_from_2cols

Name	Type	Description
doa	TyDoA	Dictionry of arrays

AoA Method: to_dic_from_2cols

Description

Convert array of arrays to dictionary by selecting 2 columns of each array as key-, value-candidates of the new dictionary if the key is not none using a 2-dimensional index-array.

Parameter

Parameter of: AoA Method: to_dic_from_2cols

Name	Type	Default	Description
aoa	TyAoA		Array of arrays
a_ix	TyAoI		Array of integer

Return Value

Return Value of: AoA Method: to_dic_from_2col*

Name	Type	Description
dic	TyDic	Dictionary

Modules for array of objects

Modules-for-array-of-dictionaries

Name	Description
aoo.py	Array of objects

Module: aoo.py

The Module aoo.py contains the single static class AoO;

aoo.py Class: AoO

Methods

AoO Methods

Name	short Description
to_unique	Concatinate array arrays

AoO Method: to_unique

Deduplicate array of objects

Parameter

Parameter of: AoO Method: to_unique

Name	Type	Description
aoo	TyAoO	Array of objects

Return Value

Return Value of: AoO Method: to_unique

Name	Type	Description
aoo_new	TyAoO	New array of objects

Module: aos.py

Classes

The Module aos.py contains the single static class AoS;

Class: AoS

AoS Methods

AoS Methods

Name	short Description
nvl	Replace empty array of strings
sh_a_date	Convert array of strings to array of dates
to_lower	Convert array of strings to array of lowered strings.
to_unique	Deduplicate array of arrays
to_unique_lower	Convert array of strings to deduplicted array of lowered strings.
to_unique_lower_invariant	Convert array of arrays to array of arrays

Method: AoS.to_unique

Parameter

Parameter of: AoS Method: to_unique

Name	Type	Default	Description
aoo	TyAoO		array of objects

Return Value

Return Value of: AoS Method: to_unique

Name	Type	Description
aoo_new	TyAoO	new array of objects

Appendix

Package Logging

Description

Logging use the module log.py of the logging package ut_log. The module supports two Logging types:

1. Standard Logging (std) or

2. User Logging (usr).

The Logging type can be defined by one of the values ‘std’ or ‘usr’ of the parameter log_type; ‘std’ is the default. The different Logging types are configured by one of the following configuration files:

1. log.std.yml or

2. log.usr.yml

The configuration files can be stored in different configuration directories (ordered by increased priority):

1. <package directory of the log package ut_log>/cfg,

2. <package directory of the application package ui_eviq_srr>/cfg,

3. <application directory of the application eviq>/cfg,

The active configuration file is the configuration file in the directory with the highest priority.

Examples

Site-packages-path = /appl/eviq/.pyenv/versions/3.11.12/lib/python3.11/site-packages Log-package = ut_log Application-package = ui_eviq_srr Application-home-path = /appl/eviq

Examples of log configuration-files

Log Configuration
Type	Directory Type	Directory	File
std	Log package	<Site-packages-path>/<Log-package>/cfg	log.std.yml
	Application package	<Site-packages-path>/<application-package>/cfg
	Application	<application-home-path>/cfg
usr	Log package	<site-packages-path>/ut_log/cfg	log.usr.yml
	Application package	<site-packages-path>/ui_eviq_srr/cfg
	Application	<application-path>/cfg

Log message types

Logging defines log file path names for the following log message types: .

1. debug

2. info

3. warning

4. error

5. critical

Log types and Log directories

Single or multiple Application log directories can be used for each message type:

Log types and directoriesg

Log type	Log directory
long	short	multiple	single
debug	dbqs	dbqs	logs
info	infs	infs	logs
warning	wrns	wrns	logs
error	errs	errs	logs
critical	crts	crts	logs

Application parameter for logging

Application parameter used in log naming

Name	Decription	Value	Description	Default	Example
appl_data	data directory				/data/eviq
tenant	tenant name	UMH			UMH
package	package name				ui_eviq_srr
cmd	command				evupreg
log_type	Logging Type	std:	Standard logging	std	std
		usr:	User Logging
log_ts_type	Logging timestamp type	ts:	Sec since 1.1.1970	ts	ts
		dt:	Datetime
log_sw_single_dir	Use single log directory	True	use single dir.	True	True
		False	use muliple dir.

Log files naming

Naming Conventions (table format)

Naming conventions for logging file paths

Type	Directory	File
debug	/<appl_data>/<tenant>/RUN/<package>/<cmd>/debs	debs_<ts>_<pid>.log
critical	/<appl_data>/<tenant>/RUN/<package>/<cmd>/logs	crts_<ts>_<pid>.log
error	/<appl_data>/<tenant>/RUN/<package>/<cmd>/logs	errs_<ts>_<pid>.log
info	/<appl_data>/<tenant>/RUN/<package>/<cmd>/logs	infs_<ts>_<pid>.log
warning	/<appl_data>/<tenant>/RUN/<package>/<cmd>/logs	rnsg_<ts>_<pid>.log

Naming Conventions (tree format)

<appl_data>   Application data folder
│
└── <tenant>  Application tenant folder
    │
    └── RUN  Applications RUN folder for Application log files
        │
        └── <package>  RUN folder of Application package: <package>
            │
            └── <cmd>  RUN folder of Application command <cmd>
                │
                ├── debs  Application command debug messages folder
                │   │
                │   └── debs_<ts>_<pid>.log  debug messages for
                │                            run of command <cmd>
                │                            with pid <pid> at <ts>
                │
                └── logs  Application command log messages folder
                    │
                    ├── crts_<ts>_<pid>.log  critical messages for
                    │                        run of command <cmd>
                    │                        with pid <pid> at <ts>
                    ├── errs_<ts>_<pid>.log  error messages for
                    │                        run of command <cmd>
                    │                        with pid <pid> at <ts>
                    ├── infs_<ts>_<pid>.log  info messages for
                    │                        run of command <cmd>
                    │                        with pid <pid> at <ts>
                    └── wrns_<ts>_<pid>.log  warning messages for
                                             run of command <cmd>
                                             with pid <pid> at <ts>

Naming Examples (table format)

Naming conventions for logging file paths

Type	Directory	File
debug	/appl/eviq/UMH/RUN/ui_eviq_srr/evdomap/debs/	debs_1750096540_354710.log
critical	/appl/eviq/UMH/RUN/ui_eviq_srr/evdomap/logs/	crts_1749971151_240257.log
error		errs_1749971151_240257.log
info		infs_1750096540_354710.log
warning		wrns_1749971151_240257.log

Naming Examples (tree format)

/data/eviq/UMH/RUN/ui_eviq_srr/evdomap  Run folder of
│                                       of function evdomap
│                                       of package ui_eviq_srr
│                                       for teanant UMH
│                                       of application eviq
│
├── debs  debug folder of Application function: evdomap
│   │
│   └── debs_1748609414_314062.log  debug messages for run
│                                   of function evdomap
│                                   using pid: 314062 at: 1748609414
│
└── logs  log folder of Application function: evdomap
    │
    ├── errs_1748609414_314062.log  error messages for run
    │                               of function evdomap
    │                               with pid: 314062 at: 1748609414
    ├── infs_1748609414_314062.log  info messages for run
    │                               of function evdomap
    │                               with pid: 314062 at: 1748609414
    └── wrns_1748609414_314062.log  warning messages for run
                                    of function evdomap
                                    with pid: 314062 at: 1748609414

Configuration files

log.std.yml (jinja2 yml file)

Content

version: 1

disable_existing_loggers: False

loggers:

    # standard logger
    std:
        # level: NOTSET
        level: DEBUG
        handlers:
            - std_debug_console
            - std_debug_file
            - std_info_file
            - std_warning_file
            - std_error_file
            - std_critical_file

handlers:

    std_debug_console:
        class: 'logging.StreamHandler'
        level: DEBUG
        formatter: std_debug
        stream: 'ext://sys.stderr'

    std_debug_file:
        class: 'logging.FileHandler'
        level: DEBUG
        formatter: std_debug
        filename: '{{dir_run_debs}}/debs_{{ts}}_{{pid}}.log'
        mode: 'a'
        delay: true

    std_info_file:
        class: 'logging.FileHandler'
        level: INFO
        formatter: std_info
        filename: '{{dir_run_infs}}/infs_{{ts}}_{{pid}}.log'
        mode: 'a'
        delay: true

    std_warning_file:
        class: 'logging.FileHandler'
        level: WARNING
        formatter: std_warning
        filename: '{{dir_run_wrns}}/wrns_{{ts}}_{{pid}}.log'
        mode: 'a'
        delay: true

    std_error_file:
        class: 'logging.FileHandler'
        level: ERROR
        formatter: std_error
        filename: '{{dir_run_errs}}/errs_{{ts}}_{{pid}}.log'
        mode: 'a'
        delay: true

    std_critical_file:
        class: 'logging.FileHandler'
        level: CRITICAL
        formatter: std_critical
        filename: '{{dir_run_crts}}/crts_{{ts}}_{{pid}}.log'
        mode: 'a'
        delay: true

    std_critical_mail:
        class: 'logging.handlers.SMTPHandler'
        level: CRITICAL
        formatter: std_critical_mail
        mailhost : localhost
        fromaddr: '[e-mail]'
        toaddrs:
            - '[e-mail]'
            - '[e-mail]'
        subject: 'Critical error with application name'

formatters:

    std_debug:
        format: '%(asctime)-15s %(levelname)s-%(name)s-%(process)d::%(module)s.%(funcName)s|%(lineno)s:: %(message)s'
        datefmt: '%Y-%m-%d %H:%M:%S'
    std_info:
        format: '%(asctime)-15s %(levelname)s-%(name)s-%(process)d::%(module)s.%(funcName)s|%(lineno)s:: %(message)s'
        datefmt: '%Y-%m-%d %H:%M:%S'
    std_warning:
        format: '%(asctime)-15s %(levelname)s-%(name)s-%(process)d::%(module)s.%(funcName)s|%(lineno)s:: %(message)s'
        datefmt: '%Y-%m-%d %H:%M:%S'
    std_error:
        format: '%(asctime)-15s %(levelname)s-%(name)s-%(process)d::%(module)s.%(funcName)s|%(lineno)s:: %(message)s'
        datefmt: '%Y-%m-%d %H:%M:%S'
    std_critical:
        format: '%(asctime)-15s %(levelname)s-%(name)s-%(process)d::%(module)s.%(funcName)s|%(lineno)s:: %(message)s'
        datefmt: '%Y-%m-%d %H:%M:%S'
    std_critical_mail:
        format: '%(asctime)-15s %(levelname)s-%(name)s-%(process)d::%(module)s.%(funcName)s|%(lineno)s:: %(message)s'
        datefmt: '%Y-%m-%d %H:%M:%S'

Jinja2-variables

log.std.yml Jinja2 variables

Name	Definition	Example
dir_run_debs	debug run directory	/data/eviq/UMH/RUN/ui_eviq_srr/evupreg/debs
dir_run_infs	info run directory	/data/eviq/UMH/RUN/ui_eviq_srr/evupreg/logs
dir_run_wrns	warning run directory
dir_run_errs	error run directory
dir_run_crts	critical error run directory
ts	Timestamp since 1970 in [sec] if log_ts_type == ‘ts’	1749483509
	Datetime in timezone Europe/ Berlin if log_ts_type == ‘dt’	20250609 17:38:29 GMT+0200
pid	Process ID	79133

Python Glossary

Python Modules

Overview

Python Modules

Name	Definition
Python modules	Files with suffix .py; they could be empty or contain python code; other modules can be imported into a module.
special Python modules	Modules like __init__.py or main.py with special names and functionality.

Python Modules Python Function ===============

Overview

Python Function

Name	Definition
Python function	Files with suffix .py; they could be empty or contain python code; other modules can be imported into a module.
special Python modules	Modules like __init__.py or main.py with special names and functionality.

Python Packages

Overview

Python Packages Overview

Name	Definition
Python package	Python packages are directories that contains the special module __init__.py and other modules, sub packages, files or directories.
Python sub-package	Python sub-packages are python packages which are contained in another python package.
Python package sub-directory	directory contained in a python package.
Python package special sub-directory	Python package sub-directories with a special meaning like data or cfg

Special python package sub-directories

Special python package sub-directories

Name	Description
bin	Directory for package scripts.
cfg	Directory for package configuration files.
data	Directory for package data files.
service	Directory for systemd service scripts.

Python Files

Overview

Python files

Name	Definition
Python modules	Files with suffix .py; they could be empty or contain python code; other modules can be imported into a module.
Python package files	Files within a python package.
Python dunder modules	Python modules which are named with leading and trailing double underscores.
special Python files	Files which are not modules and used as python marker files like py.typed.
special Python modules	Modules like __init__.py or main.py with special names and functionality.

Python Special Files

Python special files

Name	Type	Description
py.typed	Type checking marker file	The py.typed file is a marker file used in Python packages to indicate that the package supports type checking. This is a part of the PEP 561 standard, which provides a standardized way to package and distribute type information in Python.

Python Special Modules

Python special modules

Name	Type	Description
__init__.py	Package directory marker file	The dunder (double underscore) module __init__.py is used to execute initialisation code or mark the directory it contains as a package. The Module enforces explicit imports and thus clear namespace use and call them with the dot notation.
__main__.py	entry point for the package	The dunder module __main__.py serves as package entry point point. The module is executed when the package is called by the interpreter with the command python -m <package name>.
__version__.py	Version file	The dunder module __version__.py consist of assignment statements used in Versioning.

Python classes

Overview

Python classes overview

Name	Description
Python class	A class is a container to group related methods and variables together, even if no objects are created. This helps in organizing code logically.
Python static class	A class which contains only @staticmethod or @classmethod methods and no instance-specific attributes or methods.

Python methods

Overview

Python methods overview

Name	Description
Python method	Python functions defined in python modules.
Python class method	Python functions defined in python classes.
Python special class method	Python class methods with special names and functionalities.

Python class methods

Python class methods

Name	Description
Python no instance class method	Python function defined in python classes and decorated with @classmethod or @staticmethod. The first parameter conventionally called cls is a reference to the current class.
Python instance class method	Python function defined in python classes; the first parameter conventionally called self is a reference to the current class object.
special Python class method	Python class functions with special names and functionalities.

Python special class methods

Python methods examples

Name	Type	Description
__init__	class object constructor method	The special method __init__ is called when an instance (object) of a class is created; instance attributes can be defined and initalized in the method. The method us a single parameter conventionally called self to access the object.

Table of Contents

Table of Content

• ut_arr

  • Overview

  • Installation

  • Package logging

  • Package files

    • Classification

    • Package Modules

  • Modules for arrays

    • Module: arr.py

      • Class: Arr

        • Arr Methods

  • Modules for array of arrays

    • Module: aoa.py

      • aoa.py Class: AoA

        • AoA Methods

        • AoA Method: concatinate

          • Description

          • Parameter

          • Return Value

        • AoA Method: csv_writerows

          • Description

          • Parameter

          • Return Value

        • AoA Method: nvl

          • Description

          • Parameter

          • Return Value

        • AoA Method: to_aod

          • Description

          • Parameter

          • Return Value

        • AoA Method: to_arr_from_2cols

          • Description

          • Parameter

          • Return Value

        • AoA Method: to_doa_from_2cols

          • Description

          • Parameter

          • Return Value

        • AoA Method: to_dic_from_2cols

          • Description

          • Parameter

          • Return Value

  • Modules for array of objects

    • Module: aoo.py

      • aoo.py Class: AoO

        • Methods

        • AoO Method: to_unique

          • Parameter

          • Return Value

  • Module: aos.py

    • Class: AoS

      • AoS Methods

      • Method: AoS.to_unique

        • Parameter

        • Return Value

• Appendix

  • Package Logging

    • Description

    • Examples

    • Log message types

      • Log types and Log directories

      • Application parameter for logging

      • Log files naming

        • Naming Conventions (table format)

        • Naming Conventions (tree format)

        • Naming Examples (table format)

        • Naming Examples (tree format)

    • Configuration files

      • Content

      • Jinja2-variables

  • Python Glossary

    • Python Modules

      • Overview

      • Overview

    • Python Packages

      • Overview

      • Special python package sub-directories

    • Python Files

      • Overview

      • Python Special Files

      • Python Special Modules

    • Python classes

    • Python methods

      • Overview

      • Python class methods

      • Python special class methods

• Table of Contents