Now, let's see the module at `app/main.py`.

Here's where you import and use the class `FastAPI`.

This will be the main file in your application that ties everything together.

And as most of your logic will now live in its own specific module, the main file will be quite simple.

### Import `FastAPI` { #import-fastapi }

You import and create a `FastAPI` class as normally.

			}
			hostCount[disk.Hostname()]++
			formats[i*setDriveCount+j] = newFormat
		}
		var once sync.Once
		for host, count := range hostCount {
			if count > wantAtMost {
				if host == "" {
					host = "local"
				}
				once.Do(func() {
					if len(hostCount) == 1 {
						return
					}
					logger.Info(" * Set %v:", i+1)
					for j := range setDriveCount {
						disk := storageDisks[i*setDriveCount+j]

}

func TestFileHeaderRoundTripModified(t *testing.T) {
	fh := &FileHeader{
		Name:             "foo.txt",
		UncompressedSize: 987654321,
		Modified:         time.Now().Local(),
		ModifiedTime:     1234,
		ModifiedDate:     5678,
	}
	fi := fh.FileInfo()
	fh2, err := FileInfoHeader(fi)
	if err != nil {
		t.Fatal(err)
	}

By default, `fastapi dev` will start with auto-reload enabled for local development.

You can read more about it in the <a href="https://fastapi.tiangolo.com/fastapi-cli/" target="_blank">FastAPI CLI docs</a>.

</details>

### Check it { #check-it }

				time.Sleep(5 * time.Second)
			}
		}
	}()
}

// newPeerRestClients creates new peer clients.
// The two slices will point to the same clients,
// but 'all' will contain nil entry for local client.
// The 'all' slice will be in the same order across the cluster.
func newPeerRestClients(endpoints EndpointServerPools) (remote, all []*peerRESTClient) {
	if !globalIsDistErasure {

                true, ArtifactRepositoryPolicy.UPDATE_POLICY_ALWAYS, ArtifactRepositoryPolicy.CHECKSUM_POLICY_IGNORE);
        return new MavenArtifactRepository(
                "local", "file://" + baseDirectory.toUri().getRawPath(), layout, blah, blah);
    }

    protected void populateRequestFromSettings(MavenExecutionRequest request, Settings settings) throws Exception {
        if (settings == null) {

By default, `fastapi dev` will start with auto-reload enabled for local development.

You can read more about it in the <a href="https://fastapi.tiangolo.com/fastapi-cli/" target="_blank">FastAPI CLI docs</a>.

</details>

### Check it

		// pre-populate buffers only n >= 16384 which is (32Gi/2Mi)
		// for all setups smaller than this avoid pre-alloc.
		buffers.Populate()
	}
	globalBytePoolCap.Store(buffers)

	var localDrives []StorageAPI
	local := endpointServerPools.FirstLocal()
	for i, ep := range endpointServerPools {
		// If storage class is not set during startup, default values are used
		// -- Default for Reduced Redundancy Storage class is, parity = 2

```mermaid
flowchart LR
    azkaban(prisoner-of-azkaban) --> |requires| harry-3[harry v3]
```

But now the problem is, if you install the packages globally (in the global environment) instead of in a local **virtual environment**, you will have to choose which version of `harry` to install.

If you want to run `philosophers-stone` you will need to first install `harry` version `1`, for example with:

<div class="termy">

```mermaid
flowchart LR
    azkaban(prisoner-of-azkaban) --> |requires| harry-3[harry v3]
```

Mas agora o problema é que, se você instalar os pacotes globalmente (no ambiente global) em vez de em um **ambiente virtual** local, você terá que escolher qual versão do `harry` instalar.

Se você quiser executar `philosophers-stone`, precisará primeiro instalar `harry` versão `1`, por exemplo com:

<div class="termy">

```console