


What tools are commonly used to install extension libraries in Python?
pip is a Python package management tool that provides the functions of finding, downloading, installing, and uninstalling Python packages.
Currently, if you download the latest version of the installation package from python.org, it already comes with this tool.
Python 2.7.9 or Python 3.4 or above comes with the pip tool.
pip official website: https://pypi.org/project/pip/
You can use the following command to determine whether it has been installed:
pip --version
If you have not installed it yet , you can use the following method to install:
$ curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py # 下载安装脚本 $ sudo python get-pip.py # 运行安装脚本
Note: Which version of Python is used to run the installation script, pip will be associated with that version. If it is Python3, execute the following command:
$ sudo python3 get-pip.py # 运行安装脚本。
Generally, pip corresponds to Python 2.7, and pip3 corresponds to Python 3.x.
Some Linux distributions can directly use the package manager to install pip, such as Debian and Ubuntu:
sudo apt-get install python-pip
pip’s most commonly used commands
Show version and path
pip --version
Get help
pip --help
Upgrade pip
pip install -U pip
If there is a problem with this upgrade command, you can use the following command:
sudo easy_install --upgrade pip
Installation package
pip install SomePackage # 最新版本 pip install SomePackage==1.0.4 # 指定版本 pip install 'SomePackage>=1.0.4' # 最小版本
For example, I want to install Django. Just use the following command, which is convenient and quick.
pip install Django==1.7
Upgrade package
pip install --upgrade SomePackage
Upgrade the specified package by using ==, >=, <=, >, < to specify a version number .
Uninstall package
pip uninstall SomePackage
Search package
pip search SomePackage
Display installation package information
pip show
View detailed information of the specified package
pip show -f SomePackage
List installed packages
pip list
View upgradeable Package
pip list -o
Notes
If Python2 and Python3 have pip at the same time, the usage method is as follows:
Python2:
python2 -m pip install XXX
Python3:
python3 -m pip install XXX
python learning network, free online learning python platform, welcome to follow!
The above is the detailed content of What tools are commonly used to install extension libraries in Python?. 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 MBG token launched by MultiBank Group is attracting widespread attention. With its efficient pre-sale performance and successful launch, it has successfully opened up the barriers between traditional finance and blockchain technology. MBG tokens have become a hot topic in the financial circle. After all sold out in just a few minutes during the pre-sale stage, the token officially entered the market for circulation on July 22, 2025. This action not only has great significance to the MultiBank Group, but also brings new imagination space to the entire crypto ecosystem. Next, let’s take a look at what’s special about MBG. Why does MBG attract attention? It is not an ordinary crypto asset, but a digital voucher that anchors real value. Relying on MultiBank Group Daily Gundam

As a PayFi token, is Remittix (RTX) ready to shake the Cardano ecosystem and challenge the core position of ADA? Let's take a deeper analysis of key trends and forward-looking insights that are reshaping the DeFi landscape. Entering 2025, the Cardano ecosystem has shown vigorous vitality, but an emerging force, Remittix (RTX), has risen strongly on the PayFi track, which may pose a substantial threat to ADA's dominance. Is a drama about a counterattack in market value about to happen? Cardano's steady path forward Cardano has long established its benchmark image of green blockchain, and has developed steadily based on the energy-saving proof of stake (PoS) mechanism and its increasingly enhanced scalability. Hydra

The core idea of integrating AI visual understanding capabilities into PHP applications is to use the third-party AI visual service API, which is responsible for uploading images, sending requests, receiving and parsing JSON results, and storing tags into the database; 2. Automatic image tagging can significantly improve efficiency, enhance content searchability, optimize management and recommendation, and change visual content from "dead data" to "live data"; 3. Selecting AI services requires comprehensive judgments based on functional matching, accuracy, cost, ease of use, regional delay and data compliance, and it is recommended to start from general services such as Google CloudVision; 4. Common challenges include network timeout, key security, error processing, image format limitation, cost control, asynchronous processing requirements and AI recognition accuracy issues.

To realize text error correction and syntax optimization with AI, you need to follow the following steps: 1. Select a suitable AI model or API, such as Baidu, Tencent API or open source NLP library; 2. Call the API through PHP's curl or Guzzle and process the return results; 3. Display error correction information in the application and allow users to choose whether to adopt it; 4. Use php-l and PHP_CodeSniffer for syntax detection and code optimization; 5. Continuously collect feedback and update the model or rules to improve the effect. When choosing AIAPI, focus on evaluating accuracy, response speed, price and support for PHP. Code optimization should follow PSR specifications, use cache reasonably, avoid circular queries, review code regularly, and use X

User voice input is captured and sent to the PHP backend through the MediaRecorder API of the front-end JavaScript; 2. PHP saves the audio as a temporary file and calls STTAPI (such as Google or Baidu voice recognition) to convert it into text; 3. PHP sends the text to an AI service (such as OpenAIGPT) to obtain intelligent reply; 4. PHP then calls TTSAPI (such as Baidu or Google voice synthesis) to convert the reply to a voice file; 5. PHP streams the voice file back to the front-end to play, completing interaction. The entire process is dominated by PHP to ensure seamless connection between all links.

PHP provides an input basis for AI models by collecting user data (such as browsing history, geographical location) and pre-processing; 2. Use curl or gRPC to connect with AI models to obtain click-through rate and conversion rate prediction results; 3. Dynamically adjust advertising display frequency, target population and other strategies based on predictions; 4. Test different advertising variants through A/B and record data, and combine statistical analysis to optimize the effect; 5. Use PHP to monitor traffic sources and user behaviors and integrate with third-party APIs such as GoogleAds to achieve automated delivery and continuous feedback optimization, ultimately improving CTR and CVR and reducing CPC, and fully implementing the closed loop of AI-driven advertising system.

Solana's strong recovery: Can the surge in developers and meme coin carnival drive last? In-depth interpretation of trends Solana is making a comeback! After a period of silence, the public chain has rejuvenated again, the coin price continues to rise, and the development community is becoming more and more lively. But where is the real driving force for this rebound? Is it just a flash in the pan? Let's dig into the current core trends of Solana: developer ecology, meme coin fanaticism and overall ecological expansion. Behind the surge in coin prices: Real development activities have recovered Recently, SOL prices have returned to above $200 for the first time since June, causing heated discussions in the market. This is not groundless - according to Santiment data, its developers have reached a new high in the past two months. this

Against the backdrop of continued inflationary pressure, finding investment targets with long-term anti-inflation has become the focus of New York investors. Although core inflation is still above the Fed's 2% target (2.9% in June 2025), "dividend aristocrats" - those high-quality companies that have increased their dividends for many years - are becoming a stable anchor in asset allocation. This article will focus on three high-dividend targets that perform soundly: Amko, Global Tobacco and RealtyIncome, and explore how they can achieve sustained growth in complex environments. AmcorPLC (AMCR): The hidden champion of the consumer packaging track, headquartered in Switzerland, AmcorPLC is the world's leading provider of consumer packaging solutions, currently providing 5.38% of the total
