使用 venv 创建虚拟环境
隔离依赖，避免项目彼此冲突
使用 venv 创建虚拟环境 是 CoddyKit 上的免费 Django Academy 课时。 这是第 1 节课，共 4 节。 你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。 这是 Django Academy 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Django Academy 课程共包含 4 节课。
本课时的部分内容尚未翻译，以英文显示。
Why Isolate Dependencies
Every project needs its own libraries. A virtual environment keeps each project's packages separate, so one app never breaks another. 🧳
The Problem with Global Installs
Installing packages globally mixes versions across projects. One upgrade can suddenly break an older app that relied on the old version.
Meet venv
Python ships with venv, a built-in tool that creates an isolated folder holding its own Python and packages. No extra install needed.
Create an Environment
Run one command to build a fresh environment. The venv folder appears in your project, ready to hold your packages.
python -m venv venvActivate on macOS and Linux
You must activate the environment before using it. On macOS or Linux, source the activate script in your terminal.
source venv/bin/activateActivate on Windows
On Windows the path differs slightly. The same activate step turns the environment on for your current shell session.
venv\Scripts\activateSpot an Active Environment
Once active, your prompt shows the environment name in parentheses. That little (venv) tag confirms you are isolated. ✅
Install Into the Environment
With the environment active, anything you install with pip lands inside venv only, never touching your system Python.
pip install requestsDeactivate When Done
Finished working? Run one word to leave the environment. deactivate returns your shell to the normal system Python.
deactivateKeep venv Out of Git
The venv folder is large and machine-specific. Add it to .gitignore so it never gets committed to your repository.
echo venv/ >> .gitignoreOne Environment per Project
Give every project its own environment. This isolation means each app pins exactly the versions it was built and tested against.
Quick Check
Let's confirm how activation works.
Recap
You learned to create, activate, and deactivate a venv, keeping each project's packages isolated and out of Git. Clean foundations! 🎉
常见问题解答
「使用 venv 创建虚拟环境」课时是免费的吗？
是的 — 「使用 venv 创建虚拟环境」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Django Academy 课程的其余内容，请升级到 CoddyKit PRO。 Django Academy 课程共包含 4 节课。
「使用 venv 创建虚拟环境」这节课中我会学到什么？
隔离依赖，避免项目彼此冲突 你通过在浏览器中直接运行的动手代码来练习 Django Academy，全天候 AI 导师会在你学习这节课的过程中回答你的问题。
学习 Django Academy 需要有经验吗？
无需任何先前经验。CoddyKit 上的 Django Academy 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。 这是第 1 节课，共 4 节。
「使用 venv 创建虚拟环境」课时需要多长时间？
大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。
我能在这节 Django Academy 课中编写并运行代码吗？
能。每节 Django Academy 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。