#63 How to use Python Iterators | Python iter and next | Python Tutorials for Beginners

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An iterator in Python is an object that adheres to the iterator protocol and contains methods like __iter__() and __next__ (). An iterator is an iterable object that has a state so that it can keep track of its location during iteration.

By only producing the subsequent element of an iterable object when requested, iterators enable lazy evaluation. For extremely huge data sets, this is helpful. Generators and iterators are only capable of one iteration when called with the next function.

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Well explained, thank you!
At 1:46, is x an object of the class iter()? If so, why is iter() written without an upper case i? Just a question that came to my mind

liri
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Thanks so much Rakesh. I am a subscriber and I am always asking my friends to check out your videos. Can you please make a video about reading from an Excel File and Iterating through the file and also writing back to the file. Like we do in UiPath?

samaddy
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What's the difference between next() and __next__()?

mek