Python-简版List和Tuple Python列表Python list is a sequence of values, it can be any type, strings, numbers, floats, mixed content, or whatever. In this post, we will talk about Python list functions and how to create, add elements, append, reverse, and many other Python list functions....
In this example, you create a list of digits using tuple(). This way of creating tuples can be helpful when you’re working with iterators and need to convert them into tuples.For example, you can convert a list into a tuple using the tuple() constructor:...
•元组转列表:使用 list() 函数。 fruits_tuple = ('apple', 'banana', 'orange') fruits_list = list(fruits_tuple) # 输出: ['apple', 'banana', 'orange'] •集合转列表:同样使用 list() 函数。 numbers_set = {1, 2, 3, 0.5} numbers_list = list(numbers_set) # 输出: [1, 2, 3...
Other features of string slicing work analogously for list slicing as well:Both positive and negative indices can be specified: >>> a[-5:-2] ['bar', 'baz', 'qux'] >>> a[1:4] ['bar', 'baz', 'qux'] >>> a[-5:-2] == a[1:4] True Omitting the first index starts the...
类型转换list() 空tuplet = () tuple 若只有一个元素时,注意表示为t = (1,)一定要有逗号 tuple 用一对圆括号,用','隔开里面多个的元素t = ("a",1,True)元素类型不限 类型转换 tuple() range range 可方便的生成一个等差的序列,有两种表示 range(stop) 、range(start, stop[, step]) ; 通常用在...
veh = INSERT INTO zqy_veh_scrap_sto (zqy_id, vin, pack_num, scrap_time, bat_is_scrap,wmi,epname,epcode,province_code,city_code,submit_time) values 1. 2. 4.2 编写工具模块 1)编写随机工具 因为写入的内容大部分字段需要不重复,所以使用random模块,定义不同的方法生成各种类型随机数据,如随机身份...
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tuple_name=(“apple”,”banana”,”grape”,”orange”) 2 列表(list):列表和元组相似,也由一组元素组成,列表可以实现添加、删除和查找操作,元素的值可以被修改。列表是传统意义上的数组。列表创建示例如下: list=[“apple”,”banana”,”grage”,”orange”] 可以使用append方法来在尾部追加元素,使用remove来...
复制 list((1, 2, 3)) [1, 2, 3] tuple([1, 2, 3]) (1, 2, 3) 最后,我们来看一些列表和元组常用的内置函数: 代码语言:javascript 代码运行次数:0 运行 复制 l = [3, 2, 3, 7, 8, 1] l.count(3) 2 l.index(7) 3 l.reverse() l [1, 8, 7, 3, 2, 3] l.sort() l ...
Example Convert the tuple into a list, remove "apple", and convert it back into a tuple: thistuple = ("apple", "banana", "cherry")y = list(thistuple)y.remove("apple") thistuple = tuple(y) Try it Yourself » Or you can delete the tuple completely:...