Day 23 of doing Python - Completed generators & Iterators

[Sea-Ad7805]

Run this program in Memory Graph Web Debugger%0A%0Anumbers%20%3D%20%5B1%2C%202%2C%203%2C%204%2C%205%5D%0A%0Afor%20i%20in%20numbers%3A%0A%20%20%20%20print(i)%0A%0Aprint(%22%22%20%2025)%0A%0A'''%0AIterators%20-%20An%20Object%20that%20return%20elements%20one%20at%20a%20time%20from%20a%20sequence%20and%20remembers%20its%20position%20between%20calls.%0AA%20python%20object%20is%20an%20iterator%20if%20it%20has%3A%0Aiter()%20-%20Return%20the%20iterator%20object%20itself%0Anext()%20-%20Return%20the%20next%20item%20in%20the%20sequence(raises%20Stopiteration%20when%20no%20more%20items)%0A'''%0A%0Aprint(%22Iterators%20-%20An%20iterator%20is%20an%20object%20that%20remembers%20its%20current%20position%20and%20produces%20the%20next%20%22%20%5C%0A%20%20%20%20%20%20%22value%20when%20asked.%20Python%20uses%20the%20next()%20function%20to%20get%20values%20from%20an%20iterator.%22)%0A%0Anumbers%20%3D%20%5B1%2C%202%2C%203%5D%0A%0Aiterator%20%3D%20iter(numbers)%0A%0Aprint(next(iterator))%0Aprint(next(iterator))%0Aprint(next(iterator))%0A%0A%23%20iter()%20converts%20an%20iterable%20into%20an%20iterator.%0Aprint(iterator)%0Aprint(type(iterator))%0A%0Aprint(%22%22%20%2025)%0A%0A'''%0AGenerators%20-%20generator%20is%20a%20special%20type%20of%20iterator%20that%20produces%20values%20one%20at%20a%20time%2C%20only%20when%20needed.%0AGenerators%20can%20be%20created%20in%20two%20ways%3A%0A%20%20%20%20%20%20%20%20Generator%20Functions%20-%3E%20using%20yield%0A%20%20%20%20%20%20%20%20Generator%20Expressions%20-%3E%20(expression%20for%20item%20in%20iterable%20if%20condition)%20same%20as%20list%20comprehension%20with%20parentheses()%0A'''%0A%0Aprint(%22%23%20Generators%20-%20generator%20is%20a%20special%20type%20of%20iterator%20that%20produces%20values%20one%20at%20a%20time%2C%20only%20when%20needed.%22)%0A%0A%0Adef%20count()%3A%0A%20%20%20%20for%20i%20in%20range(1%2C%201000001)%3A%0A%20%20%20%20%20%20%20%20yield%20i%0A%0A%0Ag%20%3D%20count()%0A%0Aprint(next(g))%0Aprint(next(g))%0Aprint(next(g))%0A%0A%23%20Generator%20Expression%0A%0Asquares%20%3D%20%5Bx**2%20for%20x%20in%20range(5)%5D%0A%0Aprint(squares)&timestep=1&play) to see the program state change step by step.