Skip to main content

A Scientific Document Calculation Assistant

Project description


doCal is a scientific report document calculation assistant that aims to reduce the routine code used inside Python chunks in Pweave and/or PythonTEX documents. While embedding python code inside a document is a big advantage, it is still required to format Python calculations output and equations to LaTeX form. Thus the user still has to write significantly more code to make the results flow with the surrounding document. This library intends to solve that problem.


  • Automatic calculation and unit conversion and handling (idea from Mathcad, using Sympy units)
  • Automatic formatting of equations, calculations and results into LaTeX form (using Sympy)
  • LaTeX (.tex) file output that can be converted to other formats via pandoc (including MS Word .docx)
  • Clear LaTeX formatted calculation procedure output

An Example:

Inside a Pweave source document the user (having imported necessary modules and defined variables) writes

The area moment of inertia is:

<%cal('I_R = (b*(h**3))/12 - ((b-2*t)*(h-2*t)**3)/12')%>

The center of gravity is

Now when the file is weaved into a .tex file, the above is converted into:

The area moment of inertia is:

I_{R}	&= \frac{b}{12} \cdot h^{3} - \frac{1}{12} \cdot \left(b - 2 \cdot t\right) \cdot \left(h - 2 \cdot t\right)^{3}\\
		&= \frac{5\,\mathrm{cm}}{12} \times \left(11\,\mathrm{cm}\right)^{3} - \frac{1}{12} \times \left(5\,\mathrm{cm} - 2 \times 1\,\mathrm{mm}\right) \times \left(11\,\mathrm{cm} - 2 \times 1\,\mathrm{mm}\right)^{3}\\
		&= 5.07(10^{-07})\,\mathrm{m^{4}}\\

The center of gravity is

which, when compiled to pdf will look like PDF preview


It can be installed using pip:

pip install doCal

Currently, the package provides two functions: eqn for formatting equations (no calculations), fmt for formatting individual quantities, and cal for calculations.


The project is currently under development and since I am not experienced, any suggestion or contribution is welcome.

Project details

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, size & hash SHA256 hash help File type Python version Upload date
doCal-0.1.2-py3-none-any.whl (9.7 kB) Copy SHA256 hash SHA256 Wheel py3 Aug 31, 2018
doCal-0.1.2.tar.gz (5.7 kB) Copy SHA256 hash SHA256 Source None Aug 31, 2018

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN SignalFx SignalFx Supporter DigiCert DigiCert EV certificate StatusPage StatusPage Status page