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3 cards from this section. Quick, good the night before a test.
What is an iterator in Python?
Think of it as a way to access elements sequentially.
Name the two methods that an object must implement to be considered an iterator.
One returns the iterator itself, the other returns the next item.
What does the next() method do in an iterator?
It retrieves one item at a time.
True or False: The iter() method must return a new iterator each time.
Just remember that it identifies the same iterator.
Design a generator that can count both up and down based on a parameter. If the parameter is positive, count up; if negative, count down. Explain your approach.
Consider how to handle the count state in both scenarios.
Develop a comprehension of how iterators can be utilized in data pipelines, providing a custom example.
Think of real-world situations where data flows through various stages.
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