ArcPy
ArcPy is a Python site package developed by Esri that provides a powerful and productive way to perform geographic data analysis, data conversion, data management, and map automation with ArcGIS. It allows developers and GIS professionals to write Python scripts to automate GIS workflows, manipulate spatial data, and extend the capabilities of ArcGIS Desktop and ArcGIS Pro. ArcPy integrates with the ArcGIS geoprocessing framework, enabling access to hundreds of geoprocessing tools and functions for spatial analysis.
Developers should learn ArcPy when working with Esri's ArcGIS platform for automating repetitive GIS tasks, performing complex spatial analyses, or building custom geoprocessing tools in Python. It is essential for GIS analysts, data scientists, and developers in fields like urban planning, environmental science, and logistics who need to process large spatial datasets efficiently. Use cases include batch processing of shapefiles, creating map layouts programmatically, and integrating GIS workflows into larger Python-based applications.