A common challenge in GIS work is locating specific elements among thousands of records, or performing repetitive operations that are both time-consuming and tedious. Python libraries like ArcPy and PyQGIS let us automate exactly these kinds of tasks in ArcMap and QGIS.
Automation scripts for ArcMap and QGIS that handle repetitive spatial tasks — filtering, batch processing and element lookup across large datasets. Using ArcPy and PyQGIS reduces hours of manual work to a single script run.
Vectorising water and sewer networks was one of my most frequent tasks at the start of my GIS career. After many such projects I can say that you do not need to know every component of these systems inside-out to map them correctly in GIS — but it certainly helps. Precision, consistency and understanding of network topology are what matter most.