```Python hl_lines="10"
    {!> ../../../docs_src/query_params_str_validations/tutorial003.py!}
    ```

## Add regular expressions

You can define a <abbr title="A regular expression, regex or regexp is a sequence of characters that define a search pattern for strings.">regular expression</abbr> `pattern` that the parameter should match:

=== "Python 3.10+"

    ```Python hl_lines="11"

//
//   bool KilledBySIGHUP(int exit_code) {
//     return WIFSIGNALED(exit_code) && WTERMSIG(exit_code) == SIGHUP;
//   }
//
//   ASSERT_EXIT(client.HangUpServer(), KilledBySIGHUP, "Hanging up!");
//
// On the regular expressions used in death tests:
//
//   On POSIX-compliant systems (*nix), we use the <regex.h> library,
//   which uses the POSIX extended regex syntax.
//

	if kubetypes.IsRestartableInitContainer(initContainer) {
		if containerStatus.Started == nil || !*containerStatus.Started {
			return false
		}
	} else { // regular init container
		if !containerStatus.Ready {
			return false
		}
	}
	return true
}

// GeneratePodInitializedCondition returns initialized condition if all init containers in a pod are ready, else it

import java.io.File


@LeaksFileHandles("Kotlin Compiler Daemon working directory")
class PrecompiledScriptPluginTemplatesTest : AbstractPrecompiledScriptPluginTest() {

    @Test
    fun `Project scripts from regular source-sets are compiled via the PrecompiledProjectScript template`() {

        givenPrecompiledKotlinScript(
            "my-project-script.gradle.kts",
            """

            task("my-task")

  src: local('Roboto'), local('Roboto-Regular'), url(https://fonts.gstatic.com/s/roboto/v19/KFOmCnqEu92Fr1Mu72xKKTU1Kvnz.woff2) format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 400;

			var st syscall.Stat_t
			err := ignoringEINTR(func() error {
				return syscall.Fstat(fd, &st)
			})
			typ := st.Mode & syscall.S_IFMT
			// Don't try to use kqueue with regular files on *BSDs.
			// On FreeBSD a regular file is always
			// reported as ready for writing.
			// On Dragonfly, NetBSD and OpenBSD the fd is signaled
			// only once as ready (both read and write).
			// Issue 19093.

shad.0g0.0r0.0space9eaea0911d89d6{{208.79999533295631, 148.31999668478966}, {334, 25}}ClassShapedGraphicFi-RegularSize12ID14Sty{\rtf1\ansi\ansicpg1252\cocoartf1561\cocoasubrtf400 {\fonttbl\f0\fnil\fcharset0 HelveticaNeue;\f1\fnil\fcharset0 Menlo-Regular;\f2\fnil\fcharset0 Menlo-Italic; } {\colortbl;\red255\green255\blue255;} {\*\expandedcolortbl;;} \deftab720 \pard\pardeftab720\qc\partightenfactor0 \f0\fs24 \cf0 Task \f1 publish \f2\i MyLib \f1\i0 PublicationTo \f2\i MyRepo \f1\i0 Repository}Wra...

package syntax

// Note to implementers:
// In this package, re is always a *Regexp and r is always a rune.

import (
	"slices"
	"strconv"
	"strings"
	"unicode"
)

// A Regexp is a node in a regular expression syntax tree.
type Regexp struct {
	Op       Op // operator
	Flags    Flags
	Sub      []*Regexp  // subexpressions, if any
	Sub0     [1]*Regexp // storage for short Sub

    assertTrue(empty instanceof EmptyContiguousSet);
    reserializeAndAssert(empty);

    ContiguousSet<Integer> regular = ContiguousSet.create(Range.closed(1, 3), integers());
    assertTrue(regular instanceof RegularContiguousSet);
    reserializeAndAssert(regular);

    /*
     * Make sure that we're using RegularContiguousSet.SerializedForm and not

Interacting with a composite build is generally similar to a regular multi-project build.
Tasks can be executed, tests can be run, and builds can be imported into the IDE.

[[composite_build_executing_tasks]]
=== Executing tasks

Tasks from an included build can be executed from the command-line or IDE in the same way as tasks from a regular multi-project build.