[Python] 03 - Lists, Dictionaries, Tuples, Set

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[Python] 03 - Lists, Dictionaries, Tuples, Set

Lists 列表一.基础知识定义 >>> sList = list("hello") >>> sList ['h', 'e', 'l', 'l', 'o'] 功能函数 append # 添加一个元素 pop # 拿走一个元素 sort reverse In [11]: dir(list) Out[11]: ['__add__', '__class__', '__contains__', '__delattr__', '__delitem__',…

python arguments args and args is for dictionaries, is for lists or tuples.

below is a good answer for this question , so I copy on here for some people need it By the way, the three forms can be combined as follows: def f(a,*b,**c): All single arguments beyond the first will end up with the tuple b, and all key/value argume…

Python 列表(Lists)

Python 列表(Lists) 序列是Python中最基本的数据结构.序列中的每个元素都分配一个数字 - 它的位置,或索引,第一个索引是0,第二个索引是1,依此类推. Python有6个序列的内置类型,但最常见的是列表和元组. 序列都可以进行的操作包括索引,切片,加,乘,检查成员. 此外,Python已经内置确定序列的长度以及确定最大和最小的元素的方法. 列表是最常用的Python数据类型,它可以作为一个方括号内的逗号分隔值出现. 列表的数据项不需要具有相同的类型创建一个列表,只要把逗号分隔…

Think Python - Chapter 11 - Dictionaries

Dictionaries A dictionary is like a list, but more general. In a list, the indices have to be integers; in a dictionary they can be (almost) any type.You can think of a dictionary as a mapping between a set of indices (which are called keys) and a se…

Python 系列：1 - Tuples and Sequences

5.3 Tuples and Sequences We saw that lists and strings have many common properties, e.g., indexing and slicing operations. They are two examples of sequence data types. Since Python is an evolving language, other sequence data types may be added. The…

Lists and tuples

zip is a built-in function that takes two or more sequence and ‘zips’ them into a list of tuples, where each tuple contains one element from each sequence. The result is a list of tuples where each tuple contains a character from the string and the c…