tupple 可以用来做 dict 的 key 的,准确的说,所有不可变对象都可以,而 list 不可以 参考 https://learnbatta.com/blog/why-tuple-is-faster-than-list-in-python-22/ https://www.afternerd.com/blog/difference-between-list-tuple/
list VS tuple:遍历速度 In [13]:fromnumpy.randomimportrandIn [14]: values = rand(5,2)In [15]: valuesOut[15]:array([[0.58715281,0.80168228],[0.18092562,0.38003109],[0.7041874,0.36891089],[0.49066082,0.4369031],[0.66990039,0.61642406]])In [16]: l = [list(row)forrowinvalues]In [17]: lO...
It will be very complicated to track those changes in lists but immutable object tuple can't change after created. So tuples are easy to debug. Functions Support The tuples support less operation than the list. The inbuilt dir(object) is used to get all the supported functions for the lis...
In this tutorial, you'll learn the key characteristics of lists and tuples in Python, as well as how to define and manipulate them. When you're finished, you'll have a good feel for when to use a tuple vs a list in a Python program.
而且功能都包含了，而且元组甚至还不能够修改。元组的存在意义是什么？提到Python中的元组（tuple），很多...
# 4. 类型转换list_to_tuple=tuple([1,2])# (1, 2)tuple_to_list=list(("x","y"))# ["x", "y"]# 字符串→元组(拆分为单个字符)str_to_tuple=tuple("abc")# ('a', 'b', 'c') # 5.不可变性验证fixed=(3,5)# fixed[0] = 4 # 报错!TypeErrormutable_nested=(1,[2,3])mutable...
Tuple=(1,2,3) 2. Mutable lists vs immutable tuples The main difference between lists and tuples is the fact that lists are mutable whereas tuples are immutable. It means that we can modify a list after it has been initialized i.e. we can add, update or even delete items in a list...
在Python编程语言中,有许多数据结构可供使用,其中最常用的是元组(tuple)和数组(list)。虽然它们在某种程度上可以互换使用,但它们在实现和使用上有一些不同之处。本文将介绍Python元组和数组的基本概念、创建和访问、操作和应用,并使用代码示例来说明。 元组(Tuple) ...
fruit_tuple = ('apple', 'pear', 'cherry')fruit_list = list(fruit_tuple)fruit_list[2] = 'banana'fruit_tuple = tuple(fruit_list)print(fruit_tuple) ('apple', 'pear', 'banana') 2.6 元组连接(合并)/复制 与字符串一样,元组之间可以使用+号和*号实现元组的连接和复制,这就意味着它们可以生成...
元组的创建很简单,使用圆括号()直接创建或者使用tuple()函数创建,只需要在圆括号中添加元素,并使用逗号隔开即可。 1.1 使用 () 创建元组 通过()创建元组后,使用=将它赋值给变量,格式如下: tuple_name = (element_1, element_2, ..., element_n) ...