Companion code for the published article in [1], it provides the algorithm for the design of torpedo shaped, simple bladed pico-hydraulic turbines. Along the algorithm a design example is applied. The main file is a jupyter notebook conceived to be uploaded to Google drive and used with Google Colab extension. [1] Abraham Vivas, A. Viedma & A. S. Kaiser. (2021). In-pipe axial pico-hydraulic tailored turbine design: A novel approach using a dimensionless design chart. Energy Conversion and Management, 250, p.114884. https://doi.org/10.1016/j.enconman.2021.114884