Python笔记高级特性的相关内容

文章 2022-05-27 来自：开发者社区

python3入门笔记三之高级特性---切片，迭代，列表生成式，生成器，迭代器

切片（取指定索引范围）格式：arr[开始索引:结束索引:Step] 开始索引默认0，可不写；结束索引默认为数组的长度，获取的范围为开始索引-结束索引之间，不包括结束索引； Step默认为1。L = ['0', '1', '2', '3', '4'] print( L[0:3]) # ['0', '1', '2'] 获取从索引0开始，到索引3之间的，不包括索引3的数 print( ....

文章 2017-07-31 来自：开发者社区

python3精简笔记(三)——高级特性

Python中 1行代码能实现的功能，决不写5行代码。请始终牢记，代码越少，开发效率越高。切片取一个list或tuple的部分元素是非常常见的操作。Python提供了切片（Slice）操作符 L = ['老于', '小王', '小明', 'Bob', 'Jack'] print(L[0:3]); 输出结果 ['老于', '小王', '小明'] L[0:3]表示，从索...

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python3入门笔记三之高级特性---切片，迭代，列表生成式，生成器，迭代器

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