Equation Interpeter
The Equation Package provide an extentable Equation Parser and Evaluation System.
It will take a string such as “sin(x+y^2)” and convert it to a python object that can be called this allow the safe evaluation of equations stored in configuration files or enterned from the keyboard. This Package never calls a python evaluation command hence their is no risk of executing any unexpected python code.
The Generated Expression Object is desgined to behave like a python function, and can be used any where a python funcion is expected, it may be called with either positional or keyword arguments to set the Equations Variables, by default the order of the variables is as they appear in the equation, however an explicit order may be set when the Expression object is created.
Example
>>> from Equation import Expression
>>> fn = Expression("sin(x+y^2)",["y","x"])
>>> fn
sin((x + (y ^ (2+0j))))
>>> print fn
\sin\left(\left(x + y^{(2+0j)}\right)\right)
>>> fn(3,4)
(0.42016703682664092+0j)
Numpy Arrays Supported
The default function maping used by this package map the operators and functions to Numpy Functions, hence the generated object may be called with numpy arrays.
Latex Support
The display string format i.e. str() is set to use Latex syntax allowing high quality equations to be rendered in output this syntax is supported by the grqaphing package matplotlib
Future Versions
Goals for future versions are:
Reduce repr() type respresentation to use only required brackets
Allow the use of function variable, rather than just predefined functions
2 maintainers
Release files for Equation 1.2.01
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distributions (sdists)
| File | Size | Uploaded | |
|---|---|---|---|
| Equation-1.2.01.zip | 25.6 kB | Details | |
| Equation-1.2.01.tar.gz | 17.7 kB | Details |
Built distributions (wheels)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| Equation-1.2.01.win32.exe | Details | |||
| Equation-1.2.01-py2.7.egg | Legacy Egg format | - | - | Details |
Total release size: 438.7 kB
Release files / Equation-1.2.01.zip
| Download URL | Equation-1.2.01.zip |
|---|---|
| Size | 25.6 kB |
| Tags | Source |
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SHA-256 checksum How to use checksums |
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Release files / Equation-1.2.01.tar.gz
| Download URL | Equation-1.2.01.tar.gz |
|---|---|
| Size | 17.7 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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Release files / Equation-1.2.01.win32.exe
| Download URL | Equation-1.2.01.win32.exe |
|---|---|
| Size | 255.8 kB |
| Tags | Source |
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SHA-256 checksum How to use checksums |
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Release files / Equation-1.2.01-py2.7.egg
| Download URL | Equation-1.2.01-py2.7.egg |
|---|---|
| Size | 139.5 kB |
| Tags | Egg |
|
SHA-256 checksum How to use checksums |
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