Dev Panchal completed a 15-day internship learning Python programming at Creart Solution, an IT consulting and training company. During the internship, Dev learned about Python features like data types, variables, type casting, functions, modules, and how to send emails from Python. Dev created several Python programs and installed software like Sublime Text. The internship provided Dev with experience and knowledge of Python concepts like conditionals, parameters, arguments, and return functions. Dev concluded that the internship was a useful learning experience but that some learning goals were not fully achieved due to time limitations.