Python Tutorial for Beginners #13 | Python functions: write it once, use it everywhere

Python Tutorial for Beginners: Episode 13 of SyntaxPilot's free Python full course, with real-life examples for every concept. Python functions: write it once, use it everywhere. In this video you'll learn: • Why copy-pasted code silently goes wrong • Defining and calling a function with def • Parameters and arguments • return vs print (and why you get None) • return ends a function early • Returning two values at once • Default values and keyword arguments • Docstrings • Mini project: a train ticket fare calculator Every concept starts with a real-life example, then an animation and notes, then live code in the SyntaxPilot online compiler. Practice free in the SyntaxPilot compiler (nothing to install): https://syntaxpilot-learning-2026.web... Detailed notes for this episode (code, outputs, practice): https://syntaxpilot-learning-2026.web... Chapters 00:00 Welcome 00:22 Today's agenda 00:44 The copy-paste problem 01:54 def: write the steps once 03:10 Parameters and arguments 04:13 return vs print 05:28 Early return, two values 06:26 Default values 08:16 Docstrings 08:38 The copy-paste problem, fixed 09:09 Common mistakes 09:32 Mini project: train fare 10:37 Quick quiz 10:54 Recap and homework 11:15 Next episode Next episode: Scope, *args and **kwargs Post your homework and quiz answer in the comments, and subscribe for the full basic-to-master playlist, free. #Python #PythonTutorial #SyntaxPilot