lib-parameter 1.1.12

small gist,to return a default value if the parameter is None

lib_parameter

Version v1.1.12 as of 2022-03-29 see Changelog

small gist, to return a default value if the parameter is None

for mypy type annotation, the parameter usually has the type Optional[T], the returned type will have the type T

really not worth a package, just dont know where else to put it.

# definition
from typing import TypeVar, Optional

T = TypeVar('T')

def get_default_if_none(parameter: Optional[T], default: T) -> T:
    if parameter is None:
        return default
    else:
        return parameter

# usage
from typing import Optional
import lib_parameter

x: Optional[int] = None

x = lib_parameter.get_default_if_none(x, default=1)
# now x is from type int, not Optional[int]

---

automated tests, Travis Matrix, Documentation, Badges, etc. are managed with PizzaCutter (cookiecutter on steroids)

Python version required: 3.6.0 or newer

tested on recent linux with python 3.6, 3.7, 3.8, 3.9, 3.10.0, pypy-3.8 - architectures: amd64

100% code coverage, flake8 style checking ,mypy static type checking ,tested under Linux, macOS, Windows, automatic daily builds and monitoring

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• Try it Online

• Usage

• Usage from Commandline

• Installation and Upgrade

• Requirements

• Acknowledgements

• Contribute

• Report Issues

• Pull Request

• Code of Conduct

• License

• Changelog

---

Try it Online

You might try it right away in Jupyter Notebook by using the “launch binder” badge, or click here

Usage

import the module and check the code - its easy and documented there, including doctest examples.
in case of any questions the usage section might be expanded at a later time

Usage from Commandline

Usage: lib_parameter [OPTIONS] COMMAND [ARGS]...

  small gist,to return a default value if the parameter is None

Options:
  --version                     Show the version and exit.
  --traceback / --no-traceback  return traceback information on cli
  -h, --help                    Show this message and exit.

Commands:
  info  get program informations

Installation and Upgrade

• Before You start, its highly recommended to update pip and setup tools:

python -m pip --upgrade pip
python -m pip --upgrade setuptools

• to install the latest release from PyPi via pip (recommended):

python -m pip install --upgrade lib_parameter

• to install the latest version from github via pip:

python -m pip install --upgrade git+https://github.com/bitranox/lib_parameter.git

• include it into Your requirements.txt:

# Insert following line in Your requirements.txt:
# for the latest Release on pypi:
lib_parameter

# for the latest development version :
lib_parameter @ git+https://github.com/bitranox/lib_parameter.git

# to install and upgrade all modules mentioned in requirements.txt:
python -m pip install --upgrade -r /<path>/requirements.txt

• to install the latest development version from source code:

# cd ~
$ git clone https://github.com/bitranox/lib_parameter.git
$ cd lib_parameter
python setup.py install

• via makefile: makefiles are a very convenient way to install. Here we can do much more, like installing virtual environments, clean caches and so on.

# from Your shell's homedirectory:
$ git clone https://github.com/bitranox/lib_parameter.git
$ cd lib_parameter

# to run the tests:
$ make test

# to install the package
$ make install

# to clean the package
$ make clean

# uninstall the package
$ make uninstall

Requirements

following modules will be automatically installed :

## Project Requirements
click
cli_exit_tools
lib_detect_testenv

Acknowledgements

• special thanks to “uncle bob” Robert C. Martin, especially for his books on “clean code” and “clean architecture”

Contribute

I would love for you to fork and send me pull request for this project. - please Contribute

License

This software is licensed under the MIT license

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Changelog

• new MAJOR version for incompatible API changes,

• new MINOR version for added functionality in a backwards compatible manner

• new PATCH version for backwards compatible bug fixes

v1.1.12

2022-03-29: remedy mypy Untyped decorator makes function “cli_info” untyped

v1.1.11

2022-03-25: fix github actions windows test

v1.1.10

2021-11-22

• fix “setup.py test”

v1.1.9

2021-11-21: service release

• implement github actions

• implement check for test environment on __init__

v1.1.8

2020-10-09: service release

• update travis build matrix for linux 3.9-dev

• update travis build matrix (paths) for windows 3.9 / 3.10

v1.1.7

2020-08-08: service release

• fix documentation

• fix travis

• deprecate pycodestyle

• implement flake8

v1.1.6

2020-08-07: fix wheels

v1.1.5

2020-08-01: fix pypi deploy

v1.1.4

2020-07-31: initial PyPi release