private static final double[] VALUES = {
    Double.NEGATIVE_INFINITY,
    -Double.MAX_VALUE,
    (double) Long.MIN_VALUE,
    (double) Integer.MIN_VALUE,
    -Math.PI,
    -1.0,
    -Double.MIN_VALUE,
    -0.0,
    +0.0,
    Double.MIN_VALUE,
    1.0,
    Math.PI,
    (double) Integer.MAX_VALUE,
    (double) Long.MAX_VALUE,
    Double.MAX_VALUE,
    Double.POSITIVE_INFINITY,
    Double.NaN,
    Float.MAX_VALUE,
  };

```

</div>

then the internal variable `__name__` in your file, created automatically by Python, will have as value the string `"__main__"`.

So, the section:

```Python
    uvicorn.run(app, host="0.0.0.0", port=8000)
```

will run.

---

This won't happen if you import that module (file).

So, if you have another file `importer.py` with:

```Python
from myapp import app

# Some more code

Our aim is to keep the process lightweight and approachable.

Bir ASGI server'ı manuel olarak kurduysanız, FastAPI uygulamanızı import edebilmesi için genellikle özel bir formatta bir import string geçirmeniz gerekir:

<div class="termy">

```console
$ uvicorn main:app --host 0.0.0.0 --port 80

<span style="color: green;">INFO</span>:     Uvicorn running on http://0.0.0.0:80 (Press CTRL+C to quit)
```

</div>

/// note | Not

`uvicorn main:app` komutu şunları ifade eder:

        when(mockAuth.getDomain()).thenReturn(domain);
        NtlmContext context = new NtlmContext(mockAuth, true);
        byte[] type1Token = context.initSecContext(new byte[0], 0, 0);

        assertNotNull(type1Token);
        assertTrue(type1Token.length > 0);

        // Decode the token to verify its properties
        Type1Message type1Message = new Type1Message(type1Token);

        assertViolations(result, 0, 0, 0);
    }

    @Test
    void testCiFriendlySha1() throws Exception {
        SimpleProblemCollector result = validateRaw("raw-model/ok-ci-friendly-sha1.xml");
        assertViolations(result, 0, 0, 0);
    }

    @Test
    void testCiFriendlyRevision() throws Exception {

所以，下面这部分代码才会运行：

```Python
    uvicorn.run(app, host="0.0.0.0", port=8000)
```

---

如果你是导入这个模块（文件）就不会这样。

因此，如果你的另一个文件 `importer.py` 像这样：

```Python
from myapp import app

# 其他一些代码
```

在这种情况下，`myapp.py` 内部的自动变量不会有值为 `"__main__"` 的变量 `__name__`。

所以，下面这一行不会被执行：

```Python
    uvicorn.run(app, host="0.0.0.0", port=8000)
```

/// info | 信息

	b.Run(" 0000|0000 ", func(b *testing.B) { benchmarkErasureDecode(4, 4, 0, 0, size, b) })
	b.Run(" 0000|X000 ", func(b *testing.B) { benchmarkErasureDecode(4, 4, 0, 1, size, b) })
	b.Run(" X000|0000 ", func(b *testing.B) { benchmarkErasureDecode(4, 4, 1, 0, size, b) })
	b.Run(" X000|X000 ", func(b *testing.B) { benchmarkErasureDecode(4, 4, 1, 1, size, b) })
	b.Run(" 0000|XXXX ", func(b *testing.B) { benchmarkErasureDecode(4, 4, 0, 4, size, b) })

import uvicorn
from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def root():
    a = "a"
    b = "b" + a
    return {"hello world": b}


if __name__ == "__main__":

 *   <dt>An IPv6 "IPv4 compatible" (or "compat") address, {@code "::192.168.0.1"}.
 *   <dd>{@code 00 00 00 00 00 00 00 00 00 00 00 00 c0 a8 00 01}
 *   <dt>An IPv6 "IPv4 mapped" address, {@code "::ffff:192.168.0.1"}.
 *   <dd>{@code 00 00 00 00 00 00 00 00 00 00 ff ff c0 a8 00 01}
 * </dl>
 *
 * <p>A few notes about IPv6 "IPv4 mapped" addresses and their observed use in Java.
 *