> ## Documentation Index
> Fetch the complete documentation index at: https://base.bangwu.me/llms.txt
> Use this file to discover all available pages before exploring further.

# Python Libraries

> Python third-party library notes covering httpx, matplotlib, PyTorch, WordCloud, PyAutoGUI and more, with a learn-by-doing philosophy.

Third-party libraries are the core strength of Python's ecosystem. Standard libraries come with the installation, while third-party libraries are installed via `pip`, all accessed using `import` statements.

## How to Learn

You don't need to memorize every library — just master the commonly-used ones (`numpy`, `pandas` for data; `re`, `BeautifulSoup` for extraction). For others, read the official docs once to understand what they can do, and refer back to your notes when needed.

<Tip icon="lightbulb" title="The brick analogy">
  Libraries are like bricks for building a house — do you need to understand their material composition? Just learn to use them.
</Tip>

<Warning icon="triangle-exclamation" title="Prioritize official docs">
  Official documentation is the most authoritative source. Blog tutorials can supplement, but should not be your primary reference.
</Warning>

## Library Directory

For a comprehensive list, check [awesome-python-cn](https://github.com/jobbole/awesome-python-cn) with 26k+ stars, categorized by function.

<CardGroup cols={3}>
  <Card title="httpx" icon="bolt" href="/backend/Python/libs/httpx">
    Next-generation HTTP client with async support.
  </Card>

  <Card title="matplotlib" icon="chart-bar" href="/backend/Python/libs/matplotlib">
    Data visualization and charting.
  </Card>

  <Card title="wordcloud" icon="cloud" href="/backend/Python/libs/wordcloud">
    Word cloud generation and text visualization.
  </Card>

  <Card title="PyTorch" icon="microchip" href="/backend/Python/libs/PyTorch">
    Deep learning framework intro notes.
  </Card>

  <Card title="Python Notes" icon="notebook" href="/backend/Python/libs/python-notes">
    Misc notes and common usage patterns.
  </Card>

  <Card title="Data Types" icon="list" href="/backend/Python/libs/data-types">
    Python data types in detail.
  </Card>

  <Card title="pyautogui" icon="robot" href="/backend/Python/libs/pyautogui">
    Automation scripts and GUI control.
  </Card>
</CardGroup>