


The World of Python Awaits: Take the First Step and Begin Your Adventure
To step into the world of Python, download and install Python, then write a file containing print("Hello, World!") and name it hello_world.py. To run the program, enter python hello_world.py in the terminal. For a practical exercise, write a guess_the_number.py file that contains a random number generator and compares the user's guessed number to that random number. Further expand your Python knowledge through practice and exploration with онлайн-курсы, books, and community forums.
Step into the world of Python: take the first step to start your programming journey
Python is a multi-purpose A programming language known for its ease of learning, power, and wide range of uses. This guide will introduce you to the world of Python and guide you through writing your first Python program.
Installing Python
First, you need to install Python on your computer. Please visit the official website python.org to download and install the version appropriate for your operating system.
Writing your first Python program
Open your favorite text editor (such as Notepad or Sublime Text) and enter the following code:
print("Hello, World!")
Save the file and name it hello_world.py
.
Run your program
Open a command line or terminal window and navigate to the directory where the Python file is saved. Enter the following command to run the program:
python hello_world.py
You will see the output in the terminal: "Hello, World!"
Actual Case
Let's play a simple game to consolidate our Python knowledge.
Guess the Number
The goal of this game is to have the user guess a randomly generated number. Here is the Python code:
import random # 生成一个范围为 1-100 的随机数 number = random.randint(1, 100) # 初始化猜测次数 count = 0 # 循环让用户猜测数字 while True: # 获得用户的猜测 guess = int(input("猜测一个数字:")) # 更新猜测次数 count += 1 # 检查猜测是否正确 if guess == number: print("恭喜!你猜对了。猜测次数:", count) break elif guess < number: print("猜得太小了,再猜一次。") else: print("猜得太大了,再猜一次。")
Run the game
Save this code as guess_the_number.py
and follow these steps to run the game:
- Open a command line or terminal window.
- Navigate to the directory where the Python file is saved.
- Enter
python guess_the_number.py
. - Start guessing!
Expand your Python journey
Welcome to the world of Python! With practice and exploration, you'll discover the endless possibilities of Python. Online courses, books, and community forums can help you further expand your knowledge.
The above is the detailed content of The World of Python Awaits: Take the First Step and Begin Your Adventure. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undress AI Tool
Undress images for free

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

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

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

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

The key to writing PHP comments is to clarify the purpose and specifications. Comments should explain "why" rather than "what was done", avoiding redundancy or too simplicity. 1. Use a unified format, such as docblock (/*/) for class and method descriptions to improve readability and tool compatibility; 2. Emphasize the reasons behind the logic, such as why JS jumps need to be output manually; 3. Add an overview description before complex code, describe the process in steps, and help understand the overall idea; 4. Use TODO and FIXME rationally to mark to-do items and problems to facilitate subsequent tracking and collaboration. Good annotations can reduce communication costs and improve code maintenance efficiency.

The key to writing good comments is to explain "why" rather than just "what was done" to improve the readability of the code. 1. Comments should explain logical reasons, such as considerations behind value selection or processing; 2. Use paragraph annotations for complex logic to summarize the overall idea of functions or algorithms; 3. Regularly maintain comments to ensure consistency with the code, avoid misleading, and delete outdated content if necessary; 4. Synchronously check comments when reviewing the code, and record public logic through documents to reduce the burden of code comments.

There are three common ways to use PHP comments: single-line comments are suitable for briefly explaining code logic, such as // or # for the explanation of the current line; multi-line comments /*...*/ are suitable for detailed description of the functions or classes; document comments DocBlock start with /** to provide prompt information for the IDE. When using it, you should avoid nonsense, keep updating synchronously, and do not use comments to block codes for a long time.

The key to using Python to call WebAPI to obtain data is to master the basic processes and common tools. 1. Using requests to initiate HTTP requests is the most direct way. Use the get method to obtain the response and use json() to parse the data; 2. For APIs that need authentication, you can add tokens or keys through headers; 3. You need to check the response status code, it is recommended to use response.raise_for_status() to automatically handle exceptions; 4. Facing the paging interface, you can request different pages in turn and add delays to avoid frequency limitations; 5. When processing the returned JSON data, you need to extract information according to the structure, and complex data can be converted to Data

UsemultilinecommentsinPHPforfunction/classdocumentation,codedebugging,andfileheaderswhileavoidingcommonpitfalls.First,documentfunctionsandclasseswith/*...*/toexplainpurpose,parameters,andreturnvalues,aidingreadabilityandenablingIDEintegration.Second,

In Python, determine whether the for loop is the last iteration. 1. You can use the index and len() to determine whether the current index is equal to the last index; 2. You can combine enumerate() and len() to improve the simplicity of the code; 3. If you only need to obtain the last value, you can continuously assign values in the loop to retain the final result; 4. For complex scenarios such as generators, you can use the itertools module to implement tags. The four methods are applicable to different data structures and requirements respectively, and should be flexibly applied according to the specific situation when selecting.

To run the first PHP script, you must first build a server environment, and then write basic code to test and run. 1. Locally install integrated environments such as XAMPP, WAMP or MAMP; 2. Use PHP that comes with Mac or Linux system; 3. Run code through an online PHP editor; 4. Place the PHP file in the server directory such as http://htdocs; 5. Write the included .php file; 6. Visit http://localhost/test/index.php through the browser to view the results; 7. Pay attention to check whether the server is running, whether the path is correct and whether the syntax is wrong; 8. You can try to output time or process forms and deepen your understanding.

The yield keyword is used to create generators, generate values on demand, and save memory. 1. Replace return to generate finite sequences, such as Fibonacci sequences; 2. Implement infinite sequences, such as natural sequences; 3. Process big data or file readings, and process them line by line to avoid memory overflow; 4. Note that the generator can only traverse once, and can be called by next() or for loop.
