## Prayarat

FastAPI berdiri di pundak raksasa:

* <a href="https://www.starlette.io/" class="external-link" target="_blank">Starlette</a> untuk bagian web.
* <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> untuk bagian data.

## Instalasi

### Konverter path

Melalui Starlette anda bisa mendeklarasikan *parameter path* berisi *path* dengan URL seperti:

```
/files/{file_path:path}
```

Dikondisi ini nama parameter adalah `file_path` dan bagian terakhir `:path` menginformasikan parameter harus sesuai dengan setiap *path*.

Sehingga anda bisa menggunakan:

{* ../../docs_src/path_params/tutorial004.py hl[6] *}

/// tip | Tips

          for i in 1 2 3 4 5; do
            if smokeshow upload htmlcov; then
                echo "Smokeshow upload success!"
                break
            fi
            echo "Smokeshow upload error, sleep 1 sec and try again."
            sleep 1
          done
        env:
          SMOKESHOW_GITHUB_STATUS_DESCRIPTION: Coverage {coverage-percentage}
          SMOKESHOW_GITHUB_COVERAGE_THRESHOLD: 100

### Delete a Hero Again { #delete-a-hero-again }

**Deleting** a hero stays pretty much the same.

We won't satisfy the desire to refactor everything in this one. 😅

{* ../../docs_src/sql_databases/tutorial002_an_py310.py ln[96:103] hl[101] *}

### Run the App Again { #run-the-app-again }

You can run the app again:

<div class="termy">

```console

// As we didn't set the env var, we get the default value

Hello World from Python

// But if we create an environment variable first
$ export MY_NAME="Wade Wilson"

// And then call the program again
$ python main.py

// Now it can read the environment variable

Hello Wade Wilson from Python
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console

		leaked := initialSnapShot.CompareCurrentSnapshot()
		// current stack snapshot matches the initial one, no leaks, return.
		if len(leaked) == 0 {
			return
		}
		// wait a test again will deadline.
		if UTCNow().Before(deadline) {
			time.Sleep(leakDetectPauseTimeMs * time.Millisecond)
			continue
		}

And then they can try again knowing that it's probably something more similar to `stanleyjobsox` than to `johndoe`.

#### A "professional" attack { #a-professional-attack }

                // Retrying only makes sense if the invalid parameter is an tree id. If we have a stale file descriptor
                // retrying make no sense, as it will never become available again.
                if (params.contains(RequestParam.NO_RETRY)
                        || !(smbe.getCause() instanceof TransportException) && smbe.getNtStatus() != NtStatus.NT_STATUS_INVALID_PARAMETER) {

            return null;
        }).when(mockDcerpcHandle).sendrecv(any(MsrpcSamrCloseHandle.class));

        // First close call
        aliasHandle.close();

        // Act: Call close again
        aliasHandle.close();

        // Assert: Verify sendrecv for MsrpcSamrCloseHandle was called only once
        verify(mockDcerpcHandle, times(1)).sendrecv(any(MsrpcSamrCloseHandle.class));
    }

And it will save the returned value in a <abbr title="A utility/system to store computed/generated values, to reuse them instead of computing them again.">"cache"</abbr> and pass it to all the "dependants" that need it in that specific request, instead of calling the dependency multiple times for the same request.