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2024年7月31日

摘要: We can place lambda function inside list and dictionary literals. This way we can use lambda expressions to create jump tables. >>> L = [lambda s: s.s 阅读全文
posted @ 2024-07-31 17:11 ZhangZhihuiAAA 阅读(21) 评论(0) 推荐(0)
 
摘要: A closure is a nested function that can access free variables from an enclosing function even after it has finished its execution. We know that, like 阅读全文
posted @ 2024-07-31 17:08 ZhangZhihuiAAA 阅读(18) 评论(0) 推荐(0)
 
摘要: We have used functions to decorate functions and to decorate classes. Now, we will see how to define a class as a decorator. At the start of this chap 阅读全文
posted @ 2024-07-31 16:24 ZhangZhihuiAAA 阅读(20) 评论(0) 推荐(0)
 
摘要: When we talk about decorating classes, we can either decorate individual methods or we can create a decorator to decorate the whole class. class MyCla 阅读全文
posted @ 2024-07-31 15:28 ZhangZhihuiAAA 阅读(15) 评论(0) 推荐(0)
 
摘要: A decorator is a callable that takes a callable as input and returns a callable. This is the general definition of a decorator. The callable in this d 阅读全文
posted @ 2024-07-31 15:19 ZhangZhihuiAAA 阅读(12) 评论(0) 推荐(0)
 
摘要: The task of implementing iterators can be simplified by using generators. We have seen how to create custom iterators using the object-oriented way, i 阅读全文
posted @ 2024-07-31 11:20 ZhangZhihuiAAA 阅读(30) 评论(0) 推荐(0)
 
摘要: The itertools module contains special functions to create iterators for efficient looping. It has three broad categories of iterators - infinite itera 阅读全文
posted @ 2024-07-31 10:40 ZhangZhihuiAAA 阅读(11) 评论(0) 推荐(0)
 
摘要: If we want objects of this class to be used in iteration contexts, then they should support the iteration protocol. To make this class iterable, we ca 阅读全文
posted @ 2024-07-31 10:33 ZhangZhihuiAAA 阅读(8) 评论(0) 推荐(0)
 
摘要: In our first example, we will create iterable objects, which, when iterated over, will give out cubes of numbers, and these objects will support multi 阅读全文
posted @ 2024-07-31 10:29 ZhangZhihuiAAA 阅读(14) 评论(0) 推荐(0)
 
摘要: There are many built-in functions and methods that return iterables and iterators. Here are a few examples: range() returns an iterable dict.keys() re 阅读全文
posted @ 2024-07-31 09:43 ZhangZhihuiAAA 阅读(14) 评论(0) 推荐(0)
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