How to value python iterator

This article will explain in detail how to value the python iterator. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

Description

1. Iterable objects cannot be iterated all the time (except for indexing, slicing and Key), but they can be converted into iterators, which use _ _ next__ () to take values.

2. If you still need next after the value in the iterator has been fetched, then report the error of StopIteration.

Example

L1 = [1,2,3,] obj = L1. Iterative iterators _ () # or iter (L1) # print (obj) # ret = obj.__next__ () print (ret) ret = obj.__next__ () # StopIterationprint (ret) # iterator uses next to take the value: a next takes the corresponding value If you run out of values in the iterator, and you still need next,#, then report an error in StopIteration. This is the end of the article on "how to value the python iterator". I hope the above content can be helpful to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.