```Python hl_lines="3"
{!../../../docs_src/first_steps/tutorial001.py!}
```

Burada `app` değişkeni `FastAPI` sınıfının bir örneği olacaktır.

Bu tüm API'yi oluşturmak için ana etkileşim noktası olacaktır.

`uvicorn` komutunda atıfta bulunulan `app` ile aynıdır.

<div class="termy">

```console
$ uvicorn main:app --reload

AAW,GAGpBuB,EAASpD,iBAAiB1D,KAAK3C,EAAEoE,GAAS/B,GAEtC+M,GACFpP,EAAEoE,GAAQoC,KAAK7B,GAAU4G,GAAG6D,GAG9BrL,EAAM4C,4DA/bN,MA3G2B,wCA+G3B,OAAOsB,WAqcXjI,EAAES,UACCmG,GAAG9B,EAAMG,eAAgB+B,GAAqByC,GAAS0F,sBAE1DnP,EAAEyK,QAAQ7D,GAAG9B,EAAMuE,cAAe,WAEhC,IADA,IAAMgG,EAAY,GAAGnC,MAAMvK,KAAKlC,SAASoM,iBAAiB7F,KACjDsI,EAAI,EAAGC,EAAMF,EAAU1D,OAAQ2D,EAAIC,EAAKD,IAAK,CACpD,IAAME,EAAYxP,EAAEqP,EAAUC,IAC9B7F,GAASpD,iBAAiB1D,KAAK6M,EAAWA,EAAUhJ,WAUxDxG,EAAE6D,GAAGa,GAAQ+E,GAASpD,iBACtBrG,EAAE6D,GAAGa,GAAMmC,YA...

          "co\uFF61uk", // Alternate dot character
          "\u7f51\u7edc.Cn", // "网络.Cn"
          "j\u00f8rpeland.no", // "jorpeland.no" (first o slashed)
          "xn--jrpeland-54a.no"); // IDNA (punycode) encoding of above

  private static final ImmutableSet<String> PS_NOT_RS =
      ImmutableSet.of("blogspot.com", "blogspot.co.uk", "uk.com");

  private static final ImmutableSet<String> PS =

    pip install altgraph appdirs cachetools certifi cffi chardet colorama \
    cryptography cycler Cython decorator google-api-python-client \
    google-auth google-auth-httplib2 grpcio httplib2 idna ipython-genutils \
    kiwisolver macholib matplotlib nose numpy packaging pandas pickleshare pip \
    prompt-toolkit protobuf psutil pyasn1 pyasn1-modules pycparser Pygments \

Buna ek olarak Python'un **Veri Bilimi**, Makine Öğrenimi ve özellikle Derin Öğrenme için ana dil olduğu gerçeği, FastAPI'yi Veri Bilimi / Makine Öğrenimi web API'leri ve uygulamaları için çok iyi bir seçenek haline getirir.

          "co\uFF61uk", // Alternate dot character
          "\u7f51\u7edc.Cn", // "网络.Cn"
          "j\u00f8rpeland.no", // "jorpeland.no" (first o slashed)
          "xn--jrpeland-54a.no"); // IDNA (punycode) encoding of above

  private static final ImmutableSet<String> PS_NOT_RS =
      ImmutableSet.of("blogspot.com", "blogspot.co.uk", "uk.com");

  private static final ImmutableSet<String> PS =

    --hash=sha256:fd6f6d1384a9f491732cee233b99cd4bfd6e838a8815cc86722f9d2ee64032af
    # via
    #   -r requirements.in
    #   keras-nightly
idna==3.7 \
    --hash=sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc \
    --hash=sha256:82fee1fc78add43492d3a1898bfa6d8a904cc97d8427f683ed8e798d07761aa0
    # via requests
jax==0.4.7 \

import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import junit.framework.TestCase;

/**
 * Tests for {@link Uninterruptibles}.
 *
 * @author Anthony Zana
 */
public class UninterruptiblesTest extends TestCase {
  private static final String EXPECTED_TAKE = "expectedTake";

  /** Timeout to use when we don't expect the timeout to expire. */

    --hash=sha256:fd6f6d1384a9f491732cee233b99cd4bfd6e838a8815cc86722f9d2ee64032af
    # via
    #   -r requirements.in
    #   keras-nightly
idna==3.7 \
    --hash=sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc \
    --hash=sha256:82fee1fc78add43492d3a1898bfa6d8a904cc97d8427f683ed8e798d07761aa0
    # via requests
jax==0.4.7 \

    --hash=sha256:fd6f6d1384a9f491732cee233b99cd4bfd6e838a8815cc86722f9d2ee64032af
    # via
    #   -r requirements.in
    #   keras-nightly
idna==3.7 \
    --hash=sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc \
    --hash=sha256:82fee1fc78add43492d3a1898bfa6d8a904cc97d8427f683ed8e798d07761aa0
    # via requests
jax==0.4.7 \