Lesson 2 - Iterators, Generators and Some Functions in Python
In the last lesson, Python Collections - Tuples and Lists, we learned in depth about working with tuples and lists.
In this lesson, we'll introduce some of the more advanced techniques of functional programming in Python. Let's look at lambda functions, iterators and generators, and a few built-in functions.
Iterators and Generators
Iterators
Iterators are objects that have the special __next__
method and return a single value each time. Iterators are a subset of
iterable objects that have the special __iter__ method. We used
iterable objects, for example, in the for loop. But let's go back
to the iterators. We create an iterator using the iter() function
from an iterable object, such as a list.
Example:
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In this tutorial we'll take a look at iterators and generators. We'll also deepen our knowledge of comprehensions and learn a few built-in functions.
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