### Pydantic v1 `regex` en lugar de `pattern`

Antes de la versión 2 de Pydantic y antes de FastAPI 0.100.0, el parámetro se llamaba `regex` en lugar de `pattern`, pero ahora está en desuso.

Todavía podrías ver algo de código que lo usa:

//// tab | Pydantic v1

{* ../../docs_src/query_params_str_validations/tutorial004_regex_an_py310.py hl[11] *}

////

     *
     * All that said, don't forget that everyone should call converter.convert() instead of
     * converter.apply(), anyway. If clients use only converter.convert(), then their nullness
     * checkers are unlikely to ever look at the annotations on this declaration.
     *
     * Historical note: At one point, we'd declared this method as accepting and returning nullable
     * values. For details on that, see earlier revisions of this file.

ouchi.saga.jp
ouda.nara.jp
oum.gov.pl
oumu.hokkaido.jp
outsystemscloud.com
overhalla.no
ovh
ovre-eiker.no
owani.aomori.jp
owariasahi.aichi.jp
own.pm
ownip.net
ownprovider.com
ox.rs
oxa.cloud
oy.lc
oya.to
oyabe.toyama.jp
oyama.tochigi.jp
oyamazaki.kyoto.jp
oyer.no
oygarden.no
oyodo.nara.jp
oystre-slidre.no
oz.au
ozora.hokkaido.jp
ozu.ehime.jp

	if err != nil {
		t.Fatalf("os.Stat:1 %v", err)
	}
	hdr.Typeflag = TypeDir
	// Force a PAX long name to be written. The name was taken from a practical example
	// that fails and replaced ever char through numbers to anonymize the sample.

    if (expected.equals(in)) {
      assertSame(in, out);
    } else {
      assertEquals(expected, out);
    }
  }

  // Test collapse() a little differently than the rest, as we really want to
  // cover lots of different configurations of input text
  public void testCollapse() {
    // collapsing groups of '-' into '_' or '-'
    doTestCollapse("-", "_");
    doTestCollapse("x-", "x_");
    doTestCollapse("-x", "_x");

labels.advance_search_occt_default=Überall auf der Seite
labels.advance_search_occt_allintitle=im Titel der Seite
labels.advance_search_occt_allinurl=in der URL der Seite
labels.advance_search_sitesearch=Website oder Domain
labels.advance_search_timestamp=Letzte Aktualisierung
labels.advance_search_timestamp_default=Jederzeit
labels.advance_search_timestamp_pastday=Letzte 24 Stunden
labels.advance_search_timestamp_pastweek=Letzte Woche

SELECTOR_INDICATORS = '.carousel-indicators'\nconst SELECTOR_DATA_SLIDE = '[data-slide], [data-slide-to]'\nconst SELECTOR_DATA_RIDE = '[data-ride=\"carousel\"]'\n\nconst Default = {\n  interval: 5000,\n  keyboard: true,\n  slide: false,\n  pause: 'hover',\n  wrap: true,\n  touch: true\n}\n\nconst DefaultType = {\n  interval: '(number|boolean)',\n  keyboard: 'boolean',\n  slide: '(boolean|string)',\n  pause: '(string|boolean)',\n  wrap: 'boolean',\n  touch: 'boolean'\n}\n\nconst PointerType = {\n ...

The **good news** is that with each different strategy there's a way to cover all of the deployment concepts. 🎉

Let's review these **deployment concepts** in terms of containers:

* HTTPS
* Running on startup
* Restarts
* Replication (the number of processes running)
* Memory

    /// note | Nota

    El `--no-cache-dir` está relacionado solo con `pip`, no tiene nada que ver con Docker o contenedores.

    ///

    La opción `--upgrade` le dice a `pip` que actualice los paquetes si ya están instalados.

observing the write to <code>done</code>
implies observing the write to <code>a</code>, so this program could
print an empty string too.
Worse, there is no guarantee that the write to <code>done</code> will ever
be observed by <code>main</code>, since there are no synchronization
events between the two threads.  The loop in <code>main</code> is not
guaranteed to finish.
</p>

<p>