linear-equations

About linear-equations

linear-equations is a mathematical Python module providing Linear Equations in one variable, and Linear Equations in two variables as Python objects through two classes called LinearEquation1D and LinearEquation2D.

Date of creation: April 04, 2021
Date of first release on PyPI: April 29, 2021

Along with the classes describing algebra of linear equations, a class Symbol has also been provided to allocate the symbols used in these equations.

gui-linear-equations

A small graphical-user interface based program is also available as a sub-part of this project. The GUI version of linear-equations has a dependency on this module, linear_equations.
Date of creation: April 20, 2021

Some features and functionalities

• class Symbol

  symbols to use in Linear Equations, for example: Symbol("x") -> x

• class LinearEquation1D

  objects of type ax + b = 0

• class LinearEquation2D

  objects of type ax + by + c = 0

• function solve1D(eqn)

  used to retrieve the solution to a 1D equation

• function solve2D(eqn1, eqn2)

  used to retrieve solution to two 2D equations

• function consistency(eqn1, eqn2)

  checks and returns if the given LinearEquation2D objects are consistent or not

• function satisfies(eqn, x, y)

  returns True if the given pair of numbers satisfy a particular LinearEquation2D and False otherwise

All classes, methods and functions are enriched with help-text that can be acccessed using the following syntax:

help(linear_equations.thing)

Edit the logging settings

To modify the level of the logger, modify:

logging.basicConfig(
    filename="linear-equations.log", level=logging.INFO, format=LOG_FORMAT
)

on Line 102 of gui_linear_equations.py to:

logging.basicConfig(
   filename="linear-equations.log", level=LEVEL, format=LOG_FORMAT
)

where LEVEL can be one of:

• logging.INFO
• logging.DEBUG
• logging.WARNING
• logging.ERROR
• logging.CRITICAL

Update History

Update (0.0.5)

Added graphing and visualization of 2-dimensional equations.
Added function graph(eqn1, eqn2) which graphs the given LinearEquation2D objects on a 2D mathematical plot along with their solution (if any)

Update (0.0.6)

Minor bug fixes:

• Fixed issues with plotting linear equations
• Improved legend on graphs

Added function graph_many(eqn1, eqn2, ..., eqn, show_legend=True) which graphs more than two LinearEquation2D objects on the same plot along with each of their solutions (if any)

Updates (0.0.7)

Minor bug fixes

Footnotes

'gui_linear_equations.py' makes use of global variables.

Run

To use, execute:

pip install linear-equations

Import this file in your project, wherever needed, using:

import linear_equations as le

To use the graphical-user interface, clone the repository on your device, navigate to the folder, and execute:

python3 gui_linear_equations.py