


What is a python tuple? Introduction to the usage of python tuples
This article brings you what is a python tuple? The introduction to the usage of python tuples has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
What is a tuple?
You can think of it as a read-only list, because tuples cannot be changed, but be aware that if a tuple contains a list element, the list element is mutable. In layman's terms As the saying goes, "The son is immutable, but the grandson is changeable."
Since tuples are immutable, only query can be implemented for the four standard operations of addition, deletion, modification, and query. The query operation of tuple is very simple.
Create tuples
You can create tuples by direct assignment, separate elements with commas, and surround them with parentheses, but this is not necessary, it is important is a comma, such as:
a = 1,2,3 b = (1,2,3) print(type(a)) print(type(b)) 对于a和b两种创建方式是等价的,a和b的类型都是元组,输出结果为: <class> <class></class></class>
But if you create a tuple of a single element, you must add an extra comma after it, such as:
a = 1, print(type(a)) 输出结果为: <class> 在数字1后面加上一个逗号,则它的类型就是元组,否则它的类型就是int 而如果只用括号的话,则不是元组: a = (1) print(type(a)) 输出结果为: <class> 所以更加说明了括号不是重要的,重要的是逗号。</class></class>
Access tuple
You can easily access tuples using indexing and slicing methods:
a = 1,2,3,4,5,6,7 print(a[1::2]) 输出为: (2, 4, 6)
Modify tuples
The tuple itself cannot be modified, but if it If the contained elements are variable, the element can be modified internally, for example:
a = 1,2,3,[2,3,4] a[3].append('new') print(a) 输出为: (1, 2, 3, [2, 3, 4, 'new']) 虽然a是元组,但是索引3的元素是列表,这时可以对该列表进行修改。
The tuple operator
can be used to connect two elements using the plus sign. The group
a = 1,2,3 b = 4,5,6 c = a + b print(c) 输出为: (1, 2, 3, 4, 5, 6)
can also use the multiplication sign:
a = 1,2,3 b = a*4 print(b) 输出为: (1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3)
Of course, you can also use the member operator in
Generally, you can use del to delete the tuple
Tuple related built-in functions
len() calculates the number of tuple elements.
max() Returns the maximum value of the element in the tuple
min() Returns the minimum value of the element in the tuple.
tuple(Iterable object) Convert iterable object to tuple.
r1 = (i**2 for i in range(10)) r2 = range(10) a = tuple(r1) b = tuple(r2) print('a:',a) print('b:',b) 输出为: a: (0, 1, 4, 9, 16, 25, 36, 49, 64, 81) b: (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) 本例中r1是生成器,r2是可迭代对象。都可以用tuple()转换为元组。
The above is the detailed content of What is a python tuple? Introduction to the usage of python tuples. For more information, please follow other related articles on the PHP Chinese website!

Python and C each have their own advantages, and the choice should be based on project requirements. 1) Python is suitable for rapid development and data processing due to its concise syntax and dynamic typing. 2)C is suitable for high performance and system programming due to its static typing and manual memory management.

Choosing Python or C depends on project requirements: 1) If you need rapid development, data processing and prototype design, choose Python; 2) If you need high performance, low latency and close hardware control, choose C.

By investing 2 hours of Python learning every day, you can effectively improve your programming skills. 1. Learn new knowledge: read documents or watch tutorials. 2. Practice: Write code and complete exercises. 3. Review: Consolidate the content you have learned. 4. Project practice: Apply what you have learned in actual projects. Such a structured learning plan can help you systematically master Python and achieve career goals.

Methods to learn Python efficiently within two hours include: 1. Review the basic knowledge and ensure that you are familiar with Python installation and basic syntax; 2. Understand the core concepts of Python, such as variables, lists, functions, etc.; 3. Master basic and advanced usage by using examples; 4. Learn common errors and debugging techniques; 5. Apply performance optimization and best practices, such as using list comprehensions and following the PEP8 style guide.

Python is suitable for beginners and data science, and C is suitable for system programming and game development. 1. Python is simple and easy to use, suitable for data science and web development. 2.C provides high performance and control, suitable for game development and system programming. The choice should be based on project needs and personal interests.

Python is more suitable for data science and rapid development, while C is more suitable for high performance and system programming. 1. Python syntax is concise and easy to learn, suitable for data processing and scientific computing. 2.C has complex syntax but excellent performance and is often used in game development and system programming.

It is feasible to invest two hours a day to learn Python. 1. Learn new knowledge: Learn new concepts in one hour, such as lists and dictionaries. 2. Practice and exercises: Use one hour to perform programming exercises, such as writing small programs. Through reasonable planning and perseverance, you can master the core concepts of Python in a short time.

Python is easier to learn and use, while C is more powerful but complex. 1. Python syntax is concise and suitable for beginners. Dynamic typing and automatic memory management make it easy to use, but may cause runtime errors. 2.C provides low-level control and advanced features, suitable for high-performance applications, but has a high learning threshold and requires manual memory and type safety management.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

WebStorm Mac version
Useful JavaScript development tools

Atom editor mac version download
The most popular open source editor

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software