keecas

Symbolic and units-aware calculations for Jupyter notebooks with beautiful LaTeX output.

What is keecas?

keecas minimizes boilerplate for symbolic calculations using Python dicts as the core container - keys represent left-hand side symbols, values represent right-hand side expressions. Built on SymPy, Pint, and Pipe, it provides automatic unit conversion and LaTeX rendering for Quarto documents.

Quick Example

from keecas import symbols, u, pc, show_eqn

# 1. Define symbols with LaTeX notation
F, A, sigma = symbols(r"F, A, \sigma")

# 2. Cell-local parameters
_p = {
    F: 10 * u.kN,
    A: 50 * u.cm**2,
}

# 3. Cell-local expressions
_e = {
    sigma: "F / A" | pc.parse_expr
}

# 4. Evaluation with pipe operations
_v = {
    k: v | pc.subs(_e | _p) | pc.convert_to([u.MPa]) | pc.N
    for k, v in _e.items()
}

# 5. Display as LaTeX amsmath
show_eqn([_p | _e, _v])

Output:

\begin{align}
    F & = 10{\,}\text{kN} &    \\[8pt]
    A & = 50{\,}\text{cm}^{2} &    \\[8pt]
    \sigma & = \dfrac{F}{A} & = 2.0{\,}\text{MPa}
\end{align}

See hello_world.ipynb for more examples.

Installation

pip install keecas
# or
uv add keecas

Quick Start

Launch JupyterLab with keecas template:

keecas edit                        # Minimal template
keecas edit --template quickstart  # Comprehensive examples
keecas edit analysis.ipynb         # Open specific notebook
keecas edit --temp                 # Temporary session

Configuration

Manage global and local settings via TOML files:

# Initialize configuration
keecas config init --global

# Edit configuration
keecas config edit --global    # Terminal editor
keecas config open --local     # System editor (GUI)

# View configuration
keecas config show             # Merged settings
keecas config path             # File locations

Key Features

• Dict-based equations: Natural mapping of LHS to RHS
• Pipe operations: Chain operations like expr | pc.subs(...) | pc.N
• Unit-aware: Automatic conversion between Pint and SymPy units
• LaTeX output: Renders as amsmath align blocks
• Cross-references: Label generation for Quarto documents
• Multi-language: 10 languages supported (5 fully localized)
• Configuration: Global/local TOML-based settings

Documentation

Full documentation: https://kompre.github.io/keecas

License

MIT License - see LICENSE