///

////

//// tab | Pydantic v1

{* ../../docs_src/settings/app03_an/config_pv1.py hl[9:10] *}

/// tip | Dica

  echo "Current pyevn version: $(pyenv --version)"

  # Check if pyenv is managed by homebrew. If so, update and upgrade pyenv.
  # Otherwise, install the latest pyenv from github.
  if command -v brew &> /dev/null && brew list pyenv &> /dev/null; then
    # On "ventura-slcn" VMs, pyenv is managed via Homebrew.
    echo "pyenv is installed and managed by homebrew."
    brew update && brew upgrade pyenv
  else

          delete-branch: true
          branch: "devprod/update-jdks"
          branch-suffix: timestamp
          labels: |
            in:building-gradle
            @dev-productivity
      - name: Trigger a build
        uses: peter-evans/create-or-update-comment@v4
        if: ${{ steps.create-pull-request.outputs.pull-request-number }}
        with:

它也被設計成可作為未來的參考，讓你隨時回來查看所需的內容。

## 運行程式碼

所有程式碼區塊都可以直接複製和使用（它們實際上是經過測試的 Python 檔案）。

要運行任何範例，請將程式碼複製到 `main.py` 檔案，並使用以下命令啟動 `fastapi dev`：

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:single">main.py</u>
<font color="#3465A4">INFO    </font> Using path <font color="#3465A4">main.py</font>

# normally mkzip refuses to overwrite an existing zip file.
# make v1.2.3.rm removes the zip file and and unpacked
# copy from the module cache.
v%.rm:
	rm -f v$*.zip
	chmod -R u+w $$(go env GOMODCACHE)/golang.org/fips140@v$* 2>/dev/null || true
	rm -rf $$(go env GOMODCACHE)/golang.org/fips140@v$*

# make v1.2.3.test runs the crypto tests using that snapshot.
v%.test:
	GOFIPS140=v$* go test -short crypto...

Nota que esto significa "`one_person` es una **instance** de la clase `Person`".

No significa "`one_person` es la **clase** llamada `Person`".

## Modelos Pydantic

<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> es un paquete de Python para realizar la validación de datos.

Declaras la "forma" de los datos como clases con atributos.

Y cada atributo tiene un tipo.

توجه کن که این یعنی "`one_person` یه **نمونه** از کلاس `Person` هست".

یعنی "`one_person` خود **کلاس** به اسم `Person` نیست".

## مدل‌های Pydantic

<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> یه کتابخونه پایتونه برای اعتبارسنجی داده‌ها.

"شکل" داده‌ها رو به‌عنوان کلاس‌هایی با ویژگی‌ها تعریف می‌کنی.

و هر ویژگی یه نوع داره.

    <img src="https://github.com/fastapi/fastapi/actions/workflows/test.yml/badge.svg?event=push&branch=master" alt="Test">
</a>
<a href="https://coverage-badge.samuelcolvin.workers.dev/redirect/fastapi/fastapi" target="_blank">
    <img src="https://coverage-badge.samuelcolvin.workers.dev/fastapi/fastapi.svg" alt="Coverage">
</a>
<a href="https://pypi.org/project/fastapi" target="_blank">

👈 ⛓ 👈 🙆 💲 ✍ 🐍 ⚪️➡️ 🌐 🔢 🔜 `str`, & 🙆 🛠️ 🎏 🆎 ⚖️ 🔬 ✔️ 🔨 📟.

## Pydantic `Settings`

👐, Pydantic 🚚 👑 🚙 🍵 👫 ⚒ 👟 ⚪️➡️ 🌐 🔢 ⏮️ <a href="https://docs.pydantic.dev/latest/concepts/pydantic_settings/" class="external-link" target="_blank">Pydantic: ⚒ 🧾</a>.

### ✍ `Settings` 🎚

🗄 `BaseSettings` ⚪️➡️ Pydantic &amp; ✍ 🎧-🎓, 📶 🌅 💖 ⏮️ Pydantic 🏷.

💡 🌖 🔃 <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic, ✅ 🚮 🩺</a>.

///

**FastAPI** 🌐 ⚓️ 🔛 Pydantic.

👆 🔜 👀 📚 🌅 🌐 👉 💡 [🔰 - 👩‍💻 🦮](tutorial/index.md){.internal-link target=_blank}.

/// tip