hekatan 0.4.0

Python display library for engineering calculations - matrices, equations, formatted output

hekatan

Python display library for engineering calculations — matrices, equations, formatted output

Install

pip install hekatan

Quick Start

from hekatan import matrix, eq, var, fraction, title, text, show

title("Beam Design")
text("Rectangular section properties:")

var("b", 300, "mm", "beam width")
var("h", 500, "mm", "beam height")

eq("A", 300 * 500, "mm²")

title("Stiffness Matrix", level=2)
K = [[12, 6, -12, 6],
     [6, 4, -6, 2],
     [-12, -6, 12, -6],
     [6, 2, -6, 4]]
matrix(K, "K")

title("Design Ratio", level=2)
fraction("M_u", "φ · b · d²", "R_n")

show()  # Opens formatted HTML in your browser

How It Works

Each function (matrix(), eq(), var(), etc.) works in 3 modes:

Mode	When	Behavior
Hekatan	Inside Hekatan Calc (WPF/CLI)	Emits @@HEKATAN markers → rendered as formatted HTML
Standalone	Regular Python script	show() generates HTML, opens in browser
Console	Fallback	ASCII formatted output

Mode is auto-detected via HEKATAN_RENDER=1 environment variable.

Functions

Function	Description	Example
matrix(data, name)	Display formatted matrix	matrix([[1,2],[3,4]], "A")
eq(name, value, unit)	Equation: name = value unit	eq("F", 25.5, "kN")
var(name, value, unit, desc)	Variable with description	var("b", 300, "mm", "width")
fraction(num, den, name)	Formatted fraction	fraction("M", "S", "σ")
title(text, level)	Heading (h1-h6)	title("Results", 2)
text(content)	Paragraph text	text("Design is OK.")
show(filename)	Generate HTML + open browser	show() or show("out.html")
clear()	Clear accumulated buffer	clear()
set_mode(mode)	Force mode	set_mode("console")

Integration with Hekatan Calc

When used inside a Hekatan Calc .hcalc document:

# My Calculation

@{python}
from hekatan import matrix, eq

K = [[12, 6], [6, 4]]
matrix(K, "K")
eq("det_K", 12*4 - 6*6)
@{end python}

The output is automatically formatted with Hekatan's CSS (matrices with brackets, equations with proper typography).

License

MIT — Giorgio Burbanelli