Learn the most efficient way to get list length in Python using len() function. Complete guide with examples, performance tips, and common use cases for counting elements in Python lists.
Learn multiple methods to concatenate lists in Python including + operator, extend(), unpacking, itertools.chain(), and list comprehensions. Compare performance and choose the best approach for your needs.
Fixing turtle module issues in Python. Learn why the window closes immediately and how to fix the code using done() or mainloop(). Step-by-step guide for beginners.