About The program is written in Python and aims to solve the Poisson equation using the finite difference method./该程序使用Python编写，旨在使用有限差分法解决泊松方程。

About The program is written in Python and aims to solve the one-dimensional diffusion equation using the finite difference method./该程序使用Python编写，旨在使用有限差分法解决一维扩散方程。