이 `entrypoint`는 `fastapi` 명령어에 다음과 같이 앱을 임포트하라고 알려줍니다:

```python
from main import app
```

코드 구조가 다음과 같다면:

```
.
├── backend
│   ├── main.py
│   ├── __init__.py
```

`entrypoint`를 다음과 같이 설정합니다:

```toml
[tool.fastapi]
entrypoint = "backend.main:app"
```

이는 다음과 동일합니다:

```python
from backend.main import app
```

### 경로와 함께 `fastapi dev` { #fastapi-dev-with-path }

    assertFailsWith<IllegalArgumentException> {
      Request.Builder().method("GET", "abc".toRequestBody("text/plain".toMediaType()))
    }
  }

  @Test
  fun head() {
    server.enqueue(
      MockResponse(
        headers = headersOf("Content-Type", "text/plain"),
      ),
    )
    val request =
      Request
        .Builder()
        .url(server.url("/"))
        .head()

# More Python versions: Deadsnakes
deb http://ppa.launchpad.net/deadsnakes/ppa/ubuntu jammy main
deb-src http://ppa.launchpad.net/deadsnakes/ppa/ubuntu jammy main

# LLVM/Clang repository
deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-18 main
deb-src http://apt.llvm.org/jammy/ llvm-toolchain-jammy-18 main

```
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

`main.py` dosyası şöyle olur:

{* ../../docs_src/async_tests/app_a_py310/main.py *}

`test_main.py` dosyasında `main.py` için testler yer alır, artık şöyle görünebilir:

{* ../../docs_src/async_tests/app_a_py310/test_main.py *}

## Çalıştırma { #run-it }

```python
from main import app
```

Якщо структура вашого коду виглядала б так:

```
.
├── backend
│   ├── main.py
│   ├── __init__.py
```

Тоді ви б задали `entrypoint` як:

```toml
[tool.fastapi]
entrypoint = "backend.main:app"
```

що було б еквівалентно:

```python
from backend.main import app
```

@Tag("Slowish")
class MultipartReaderTest {
  @Test fun `parse multipart`() {
    val multipart =
      """
      |--simple boundary
      |Content-Type: text/plain; charset=utf-8
      |Content-ID: abc
      |
      |abcd
      |efgh
      |--simple boundary
      |Content-Type: text/plain; charset=utf-8
      |Content-ID: ijk
      |
      |ijkl
      |mnop
      |
      |--simple boundary--
      """.trimMargin()

<div class="termy">

```console
// Aqui ainda não definimos a variável de ambiente
$ python main.py

// Como não definimos a variável de ambiente, obtemos o valor padrão

Hello World from Python

// Mas se criarmos uma variável de ambiente primeiro
$ export MY_NAME="Wade Wilson"

// E então chamar o programa novamente
$ python main.py

// Agora ele pode ler a variável de ambiente

Hello Wade Wilson from Python
```

```

</div>

/// note | Not

`uvicorn main:app` komutu şunları ifade eder:

* `main`: `main.py` dosyası (Python "module").
* `app`: `main.py` içinde `app = FastAPI()` satırıyla oluşturulan nesne.

Şununla eşdeğerdir:

```Python
from main import app
```

///

import okhttp3.MediaType
import okhttp3.MediaType.Companion.toMediaTypeOrNull
import okhttp3.Request
import okhttp3.RequestBody.Companion.toRequestBody
import okhttp3.curl.Main
import okhttp3.internal.http.StatusLine
import okio.sink

internal fun Main.commonCreateRequest(): Request {
  val request = Request.Builder()

  val requestMethod = method ?: if (data != null) "POST" else "GET"

    val contentType = "text/plain".toMediaType()
    val body = "\u0800".toRequestBody(contentType)
    assertThat(body.contentType()).isEqualTo("text/plain; charset=utf-8".toMediaType())
    assertThat(body.contentLength()).isEqualTo(3)
    assertThat(bodyToHex(body)).isEqualTo("e0a080")
  }

  @Test
  fun stringWithNonDefaultCharsetSpecified() {
    val contentType = "text/plain; charset=utf-16be".toMediaType()