This repository contains the Python scripts used for the processing and analysis of the electrochemical data reported in the manuscript. The provided codes include routines for plotting differential pulse voltammetry (DPV) curves, extracting and visualizing the analytical response of the sensor, calculating the standard deviation of blank measurements, and estimating the limit of detection (LOD) and limit of quantification (LOQ). Additional scripts are included for building the calibration curve of the CNT–halloysite-based ciprofloxacin sensor and evaluating its analytical performance.