Una de esas variables es la variable `PATH`.

/// tip | Consejo

Puedes aprender más sobre la variable de entorno `PATH` en la sección [Variables de Entorno](environment-variables.md#path-environment-variable){.internal-link target=_blank}.

///

Activar un entorno virtual agrega su path `.venv/bin` (en Linux y macOS) o `.venv\Scripts` (en Windows) a la variable de entorno `PATH`.

 * under the License.
 */
package org.apache.maven.model.building;

import java.io.File;
import java.net.URI;
import java.nio.file.Files;
import java.nio.file.Path;

import org.apache.maven.building.FileSource;

/**
 * Wraps an ordinary {@link File} as a model source.
 *
 * @deprecated use {@code org.apache.maven.api.services.ModelBuilder} instead
 */

import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;

/**
 * @deprecated use {@code org.apache.maven.api.services.model.RootLocator} instead
 */
@Named
@Deprecated(since = "4.0.0")
public class DefaultRootLocator implements RootLocator {

    @Override
    public boolean isRootDirectory(Path dir) {
        if (Files.isDirectory(dir.resolve(".mvn"))) {
            return true;

      exit 1
    fi
  fi
else
  JAVACMD="`\\unset -f command; \\command -v java`"

  if [ ! -x "$JAVACMD" ] ; then
    echo "The java(1) command does not exist in PATH nor is JAVA_HOME set, so Apache Maven cannot be started." >&2
    exit 1
  fi
fi

if ! "$JAVACMD" --enable-native-access=ALL-UNNAMED -version >/dev/null 2>&1; then

from typing import Annotated, Union

from fastapi import FastAPI, Path, Query

app = FastAPI()


@app.get("/items/{item_id}")
async def read_items(
    item_id: Annotated[int, Path(title="The ID of the item to get")],
    q: Annotated[Union[str, None], Query(alias="item-query")] = None,
):
    results = {"item_id": item_id}
    if q:
        results.update({"q": q})

    }:
        return True
    current_status_code = int(status_code)
    return not (current_status_code < 200 or current_status_code in {204, 205, 304})


def get_path_param_names(path: str) -> set[str]:
    return set(re.findall("{(.*?)}", path))


_invalid_args_message = (
    "Invalid args for response field! Hint: "
    "check that {type_} is a valid Pydantic field type. "

For that you need to access the request directly.

{* ../../docs_src/using_request_directly/tutorial001_py39.py hl[1,7:8] *}

By declaring a *path operation function* parameter with the type being the `Request` **FastAPI** will know to pass the `Request` in that parameter.

/// tip

Note that in this case, we are declaring a path parameter beside the request parameter.

If you have just untarred a binary Go distribution, you need to set the environment variable $GOROOT to the full path of the go directory (the one containing this README). You can omit the variable if you unpack it into /usr/local/go, or if you rebuild from sources by running all.bash (see doc/install.html). You should also add the Go binary directory $GOROOT/bin to your shell's path. For example, if you extracted the tar file into $HOME/go, you might put the following in your .profile: export GOROOT=$HOME/go...

## `PATH`環境変数

**`PATH`**という**特別な**環境変数があります。この環境変数は、OS（Linux、macOS、Windows）が実行するプログラムを発見するために使用されます。

`PATH`変数は、複数のディレクトリのパスから成る長い文字列です。このパスはLinuxやMacOSの場合は`:`で、Windowsの場合は`;`で区切られています。

例えば、`PATH`環境変数は次のような文字列かもしれません:

//// tab | Linux, macOS

```plaintext
/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin

import os
from pathlib import Path

import pytest
from fastapi.testclient import TestClient


@pytest.fixture(scope="module")
def client():
    static_dir: Path = Path(os.getcwd()) / "static"
    print(static_dir)
    static_dir.mkdir(exist_ok=True)
    from docs_src.custom_docs_ui.tutorial002_py39 import app

    with TestClient(app) as client:
        yield client
    static_dir.rmdir()