pendulum_nonlinear_ode, a Python code which sets up the ordinary differential equations (ODE) that represent the behavior of a nonlinear pendulum of length L under a gravitational force of strength G.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
pendulum_nonlinear_ode is available in a MATLAB version and an Octave version and a Python version.
python_ode, Python codes which sets up various systems of ordinary differential equations (ODE).