rtant;align-items:stretch!important}.align-content-start{-ms-flex-line-pack:start!important;align-content:flex-start!important}.align-content-end{-ms-flex-line-pack:end!important;align-content:flex-end!important}.align-content-center{-ms-flex-line-pack:center!important;align-content:center!important}.align-content-between{-ms-flex-line-pack:justify!important;align-content:space-between!important}.align-content-around{-ms-flex-line-pack:distribute!important;align-content:space-around!important}.a...

///

## Multiple Workers { #multiple-workers }

You can start multiple workers with the `--workers` command line option:

//// tab | `fastapi`

If you use the `fastapi` command:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> run --workers 4 <u style="text-decoration-style:solid">main.py</u>

		`
	var err error
	dir := t.TempDir()

	mountsPath := filepath.Join(dir, "mounts")
	if err = os.WriteFile(mountsPath, []byte(successCase), 0o666); err != nil {
		t.Fatal(err)
	}
	// Verifies if reading each line worked properly.
	{
		var mounts mountInfos
		mounts, err = readProcMounts(mountsPath)
		if err != nil {
			t.Fatal(err)
		}
		if len(mounts) != 3 {
			t.Fatalf("expected 3 mounts, got %d", len(mounts))

/// tip | Astuce

Chaque fois que vous installez un nouveau package dans cet environnement, activez de nouveau l’environnement.

   * the XML specification.
   *
   * <p>This escaper does not escape non-ASCII characters to their numeric character references
   * (NCR). However, horizontal tab {@code '\t'}, line feed {@code '\n'} and carriage return {@code
   * '\r'} are escaped to a corresponding NCR {@code "&#x9;"}, {@code "&#xA;"}, and {@code "&#xD;"}

# FastAPI CLI { #fastapi-cli }

**FastAPI <abbr title="command line interface - interfaz de línea de comandos">CLI</abbr>** es un programa de línea de comandos que puedes usar para servir tu aplicación FastAPI, gestionar tu proyecto FastAPI, y más.

Cuando instalas FastAPI (por ejemplo, con `pip install "fastapi[standard]"`), viene con un programa de línea de comandos que puedes ejecutar en la terminal.

#!/usr/bin/env bash

echo "Running $0"

set -x

trap 'catch $LINENO' ERR

# shellcheck disable=SC2120
catch() {
	if [ $# -ne 0 ]; then
		echo "error on line $1"
		for site in sitea siteb; do
			echo "$site server logs ========="
			cat "/tmp/${site}_1.log"
			echo "==========================="
			cat "/tmp/${site}_2.log"
		done
	fi

	echo "Cleaning up instances of MinIO"
	pkill minio
	pkill -9 minio

   * For example, {@code Splitter.on(Pattern.compile("\r?\n")).split(entireFile)} splits a string
   * into lines whether it uses DOS-style or UNIX-style line terminators.
   *
   * @param separatorPattern the pattern that determines whether a subsequence is a separator. This
   *     pattern may not match the empty string.

Aynı exception'ı `raise` ile tekrar fırlatabilirsiniz:

{* ../../docs_src/dependencies/tutorial008d_an_py310.py hl[17] *}

Artık client yine aynı *HTTP 500 Internal Server Error* response'unu alır, ama server log'larda bizim özel `InternalError`'ımızı görür. 😎

## `yield` Kullanan Dependency'lerin Çalıştırılması { #execution-of-dependencies-with-yield }

   * For example, {@code Splitter.on(Pattern.compile("\r?\n")).split(entireFile)} splits a string
   * into lines whether it uses DOS-style or UNIX-style line terminators.
   *
   * @param separatorPattern the pattern that determines whether a subsequence is a separator. This
   *     pattern may not match the empty string.