LYC-PythonUtils

Personal Python utility collection library.

Installation (Using pip)

• Go to the root directory of this repo.
• The requirements.txt is empty. No dependency installations required.
• Development installation: run the pip install -e . command.
• Deployment installation: run the pip install . command. (Temporarily unavailable.)
• You can now access the libraries by importing the lyc_pyutils package.

Using The Utilities

DotDict

• Full path: lyc_pyutils.libs.dotdict.DotDict
• Shortcut: lyc_pyutils.DotDict

Dot dictionary, API version 2.

Not API-compatible with the API version 1 dot dictionary.

Python interactive shell demo use case:

>>> from lyc_pyutils import dotdict
>>> DotDict = dotdict.DotDict
>>>
>>> sample = DotDict()
>>> sample
DotDict(**{})
>>> print(sample)
.{}
>>>
>>> sample.attr1 = 1
>>> sample.attr2 = 1.1
>>> sample.attr3 = True
>>> sample.attr4 = "Hello"
>>> sample.attr5 = {"hello": "World"}
>>> sample
DotDict(**{'attr1': 1, 'attr2': 1.1, 'attr3': True, 'attr4': 'Hello', 'attr5': DotDict(**{'hello': 'World'})})
>>> print(sample)
.{attr1: 1, attr2: 1.1, attr3: True, attr4: 'Hello', attr5: .{hello: 'World'}}
>>> print(sample.attr5.hello)
World
>>>
>>> sample2 = sample.to_dict____()
>>> print(sample2)
{'attr1': 1, 'attr2': 1.1, 'attr3': True, 'attr4': 'Hello', 'attr5': {'hello': 'World'}}
>>>
>>> sample3 = eval(repr(sample))
>>> sample3
DotDict(**{'attr1': 1, 'attr2': 1.1, 'attr3': True, 'attr4': 'Hello', 'attr5': DotDict(**{'hello': 'World'})})
>>> print(sample3)
.{attr1: 1, attr2: 1.1, attr3: True, attr4: 'Hello', attr5: .{hello: 'World'}}
>>> print(sample3 == sample)
True
>>> len(sample3)
5
>>>

TimedInput

• Full path: lyc_pyutils.libs.timedinput.TimedInput
• Shortcut: lyc_pyutils.TimedInput

Python "native" and platform independent timed input.

Python interactive shell demo use case:

>>> from lyc_pyutils import timedinput
>>> TimedInput = timedinput.TimedInput
>>>
>>> sample = TimedInput()
>>> sample2 = sample.take(timeout=10)
Hello  # Entered "Hello" on keyboard
>>> print(sample2)
Hello
>>> sample3 = sample.take(timeout=10)
# Entered nothing, waited for timeout
>>> print(sample3)
None
>>> print(sample3 is None)
True
>>>

FuncThread

• Full path: lyc_pyutils.libs.functhread.FuncThread
• Shortcut: lyc_pyutils.FuncThread

An extended Python standard library thread with return value(s).

Python interactive shell demo use case:

>>> import lyc_pyutils
>>> def func():
...   return "Hello world!"
...
>>> thread = lyc_pyutils.FuncThread(target=func, args=[])
>>> thread.start()
>>> thread.join(timeout=None)
'Hello world!'
>>>

rand_bool

• Full path: lyc_pyutils.libs.randbool.rand_bool
• Shortcut: lyc_pyutils.rand_bool

Random Boolean value generator.

Python interactive shell demo use case:

>>> import lyc_pyutils
>>> lyc_pyutils.rand_bool()
False
>>> lyc_pyutils.rand_bool()
False
>>> lyc_pyutils.rand_bool()
False
>>> lyc_pyutils.rand_bool()
True
>>> lyc_pyutils.rand_bool()
True
>>> lyc_pyutils.rand_bool()
True
>>> lyc_pyutils.rand_bool()
True
>>> lyc_pyutils.rand_bool()
True
>>> lyc_pyutils.rand_bool()
False
>>> lyc_pyutils.rand_bool()
False
>>> lyc_pyutils.rand_bool()
False
>>> lyc_pyutils.rand_bool()
True
>>>

load_json

• Full path: lyc_pyutils.libs.jsonrw.load_json
• Shortcut: lyc_pyutils.load_json

Loads a JSON object from a text file and returns the object.

NOTE: the returned object has inferred types.

save_json

• Full path: lyc_pyutils.libs.jsonrw.save_json
• Shortcut: lyc_pyutils.save_json

Saves a JSON object to a text file.

load_json_str

• Full path: lyc_pyutils.libs.jsonrw.load_json_str
• Shortcut: lyc_pyutils.load_json_str

Loads a JSON object from a string and returns the object.

NOTE: the returned object has inferred types.

Python interactive shell demo use case:

>>> import lyc_pyutils
>>> cfg1 = fr"""
... {{
...     "config": "config1"
... }}
... """
>>> loaded_cfg1 = lyc_pyutils.load_json_str(cfg1)
>>> loaded_cfg1
{'config': 'config1'}
>>>

save_json_str

• Full path: lyc_pyutils.libs.jsonrw.save_json_str
• Shortcut: lyc_pyutils.save_json_str

Saves a JSON object to a string and returns the string.

Python interactive shell demo use case:

>>> import lyc_pyutils
>>> cfg1 = {"config": "config1"}
>>> lyc_pyutils.save_json_str(cfg1)
'{\n    "config": "config1"\n}'
>>>

logstr

• Full path: lyc_pyutils.libs.batchlog.logstr
• Shortcut: lyc_pyutils.logstr

Logs a string to a list of logs.

logln

• Full path: lyc_pyutils.libs.batchlog.logln
• Shortcut: lyc_pyutils.logln

Logs a line to a list of logs.

flushlogs

• Full path: lyc_pyutils.libs.batchlog.flushlogs
• Shortcut: lyc_pyutils.flushlogs

Flushes each log in a list of logs.

load_text

• Full path: lyc_pyutils.libs.textrw.load_text
• Shortcut: lyc_pyutils.load_text

Loads the data from a text file to a string and returns the string.

save_text

• Full path: lyc_pyutils.libs.textrw.save_text
• Shortcut: lyc_pyutils.save_text

Saves a string to a text file.

clamp_float

• Full path: lyc_pyutils.clamps.clamp_float
• Shortcut: lyc_pyutils.clamp_float

Clamps a number to a range and returns a float.

Python interactive shell demo use case:

>>> import lyc_pyutils
>>> lyc_pyutils.clamp_float(0.5, 0.0, 1.0)
0.5
>>> lyc_pyutils.clamp_float(1.5, 0.0, 1.0)
1.0
>>> lyc_pyutils.clamp_float(-0.5, 0.0, 1.0)
0.0
>>> lyc_pyutils.clamp_float(0.5, 1.0, 0.0)
0.5
>>> lyc_pyutils.clamp_float(1.5, 1.0, 0.0)
1.0
>>> lyc_pyutils.clamp_float(-0.5, 1.0, 0.0)
0.0
>>>

clamp_int

• Full path: lyc_pyutils.clamps.clamp_int
• Shortcut: lyc_pyutils.clamp_int

Clamps a number to a range and returns an integer.

Python interactive shell demo use case:

>>> import lyc_pyutils
>>> lyc_pyutils.clamp_int(1, 0, 2)
1
>>> lyc_pyutils.clamp_int(3, 0, 2)
2
>>> lyc_pyutils.clamp_int(-1, 0, 2)
0
>>> lyc_pyutils.clamp_int(1, 2, 0)
1
>>> lyc_pyutils.clamp_int(3, 2, 0)
2
>>> lyc_pyutils.clamp_int(-1, 2, 0)
0
>>>

Testing

You can test this library by running python <this-repo>/test_all.py.

Python Code Style

Follows PEP8 with the exceptions shown in the following VSCode settings.json code fragment.

{
  ...,
  "python.formatting.provider": "autopep8",
  "python.formatting.autopep8Args": [
    "--max-line-length=119"
  ],
  "python.linting.enabled": true,
  "python.linting.pycodestyleEnabled": true,
  "python.linting.pycodestyleArgs": [
    "--max-line-length=119"
  ],
  ...
}

Change In License

On 8 April 2022, LYC-PythonUtils (versions from 1.1.4 to present) changed its license from GNU GPL3 to GNU LGPL3.

The license of all previous versions of LYC-PythonUtils (versions from 0.1.0 to 1.1.3) remains unchanged.

• LYC-PythonUtils (versions >= 1.1.4): GNU LGPL3
• LYC-PythonUtils (0.1.0 <= versions >= 1.1.3): GNU GPL3

The above changes take effect because they are agreed by 100% (1/1, >= 100%) of the contributors (prior to 8 April 2022) to this repository.

Miscellaneous

Developer's Notes 📝 And Warnings ⚠️

Notes 📝

This library is distributed under the GNU LGPL3 license.

GNU LGPL3 is based on GNU GPL3.

A subsequent work of this library is a work that satisfies any one of the following:

• Is a variant of any form of this library.
• Contains a part, some parts, or all parts of this library.
• Integrates a part, some parts, or all parts of this library.

A library usage notice is a prominent notice saying that this library is used and that this library and its use are covered by the GNU LGPL3 license.

All subsequent works of this library must include a library usage notice (as defined above).

Warnings ⚠️

Not including a library usage notice (as defined above) in any subsequent work (as defined above) of this library, and distribute it to the public is unlawful, no matter if such work makes a profit.

Doing so may result in severe civil and criminal penalties.

I reserve the rights, funds, time, and efforts to prosecute those who violate the license of this library to the maximum extent under applicable laws.

Versions

Versioning

The versioning of this library is based on Semantic Versioning.
You can see the complete Semantic Versioning specification from
  https://semver.org/.
Basically, the version name of this library is in the form of:
  x.y.z
  Where x, y, and z are integers that are greater than or equal to 0.
  Where x, y, and z are separated by dots.
  x stands for the major version and indicates non-compatible major changes to
    the library.
  y stands for the minor version and indicates forward compatible minor
    changes to the library.
  z stands for the patch version and indicates bug fixes and patches to the
    library.

Version Tags

The version tags of this repository has the form of a letter "v" followed by a
  semantic version.
Given a semantic version:
  $x.$y.$z
  Where $x, $y, and $z are the semantic major, minor, and patch versions.
The corresponding version tag would be:
  v$x.$y.$z
The version tags are on the main branch.

Copyright

Short Version

Copyright (C) 2022 Yucheng Liu. GNU LGPL3 license (GNU Lesser General Public
  License Version 3).
You should have and keep a copy of the above license. If not, please get it
  from https://www.gnu.org/licenses/lgpl-3.0.txt.
GNU LGPL3 is based on GNU GPL3, and you can find the GNU GPL3 copy at
  https://www.gnu.org/licenses/gpl-3.0.txt

Long Version

LYC-PythonUtils, LYC's personal Python utility library.
Copyright (C) 2022 Yucheng Liu. GNU LGPL3 license (GNU Lesser General Public
  License Version 3).

This program is free software: you can redistribute it and/or modify it under
  the terms of the GNU Lesser General Public License as published by the Free
  Software Foundation, either version 3 of the License, or (at your option)
  any later version.

This program is distributed in the hope that it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
  for more details.

You should have received a copy of the GNU Lesser General Public License along
  with this program. If not, see:
  1. The LICENSE file in this repository.
  2. https://www.gnu.org/licenses/#LGPL.
  3. https://www.gnu.org/licenses/lgpl-3.0.txt.

GNU Lesser General Public License Version 3 is based on the GNU General Public
  License Version 3. You can find a copy of the GNU General Public License
  Version 3 at:
  1. The README-Assets/GNU-GPL3-License.txt file in this repository.
  2. https://www.gnu.org/licenses/#GPL.
  3. https://www.gnu.org/licenses/gpl-3.0.txt.