std::vector<int64_t>(),
            "device coordinate (0, 0, 0, -1) in 'topology' is outside "
            "of mesh shape (2, 1, 1, 1)"),
        std::make_tuple(
            2, 1, TopologyWithDeviceCoordinates({0, 0, 0, 1, 1, 0, 0, 0}),
            std::vector<int64_t>(),
            "device coordinate (0, 0, 0, 1) in 'topology' is outside "
            "of mesh shape (2, 1, 1, 1)"),
        std::make_tuple(

import uvicorn
from fastapi import FastAPI

app = FastAPI()


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


if __name__ == "__main__":

	  tf_device.return %3#0, %3#1 : tensor<2048xi32>, tensor<2048xi32>
	}) {device = "TPU_REPLICATED_HOST_0"} : () -> (tensor<2048xi32>, tensor<2048xi32>)
    return %0#0, %0#1: tensor<2048xi32>, tensor<2048xi32>
  }

  // CHECK-LABEL: func @valid_copy_op_in_non_replicated_host

  // CHECK: "tf_device.launch"
  // CHECK-SAME: "/job:localhost/replica:0/task:0/device:CPU:0"

go test fuzz v1

go test fuzz v1

```

</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

package core

import (
	"istio.io/istio/pilot/pkg/features"
	"istio.io/istio/pilot/pkg/model"
)

const (
	// WildcardAddress binds to all IP addresses
	WildcardAddress = "0.0.0.0"

	// WildcardIPv6Address binds to all IPv6 addresses
	WildcardIPv6Address = "::"

	// LocalhostAddress for local binding
	LocalhostAddress = "127.0.0.1"

	// LocalhostIPv6Address for local binding

        try ( SmbResource r = new SmbFile("smb://0.0.0.0/", getContext());
              SmbResource s = r.resolve("Public/");
              SmbResource p = s.resolve("MyVideo.mkv"); ) {

            SmbResourceLocator fl = p.getLocator();

            assertEquals("0.0.0.0", fl.getServer());
            assertEquals("0.0.0.0", fl.getServerWithDfs());
            assertEquals("Public", fl.getShare());

00000080  08 07 08 08 08 09 08 0a  08 0b 08 04 08 05 08 06  |................|
00000090  04 01 05 01 06 01 00 2b  00 03 02 03 04 00 2d 00  |.......+......-.|
000000a0  02 01 01 00 33 00 26 00  24 00 1d 00 20 8e a4 3b  |....3.&.$... ..;|
000000b0  ae a1 3e 4f be 70 12 25  be 4d 07 59 da dc 08 4c  |..>O.p.%.M.Y...L|
000000c0  53 e3 f3 15 b0 99 6f 5a  2d 16 30 e6 37 00 29 00  |S.....oZ-.0.7.).|

то встроенная переменная `__name__`, автоматически создаваемая Python в вашем файле, будет иметь значение строкового типа `"__main__"`.

Тогда выполнится условие и эта часть кода:

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

будет запущена.

---

Но этого не произойдет, если вы импортируете этот модуль (файл).

Таким образом, если у вас есть файл `importer.py` с таким импортом:

```Python