3.2.1 - What is an Iterator?
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Practice Questions
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What is an iterator in Python?
💡 Hint: Think of it as a way to access elements sequentially.
Name the two methods that an object must implement to be considered an iterator.
💡 Hint: One returns the iterator itself, the other returns the next item.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the next() method do in an iterator?
💡 Hint: It retrieves one item at a time.
True or False: The iter() method must return a new iterator each time.
💡 Hint: Just remember that it identifies the same iterator.
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Challenge Problems
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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.
💡 Hint: 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.
💡 Hint: Think of real-world situations where data flows through various stages.
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