Por exemplo, você poderia ter um arquivo `main.py` com:

```Python hl_lines="3"
import os

name = os.getenv("MY_NAME", "World")
print(f"Hello {name} from Python")
```

/// tip | Dica

O segundo argumento para <a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> é o valor padrão a ser retornado.

Подробнее — в конце этой страницы.

///

## Дополнительные аргументы `Field` { #field-additional-arguments }

При использовании `Field()` с моделями Pydantic вы также можете объявлять дополнительные `examples`:

{* ../../docs_src/schema_extra_example/tutorial002_py310.py hl[2,8:11] *}

- The IP addresses and drive paths below are for demonstration purposes only, you need to replace these with the actual IP addresses and drive paths/folders.

	DateDiff  *DateDiffFunc  `parser:"| @@"`

	// Used during evaluation for aggregation funcs
	aggregate *aggVal
}

// SimpleArgFunc represents functions with simple expression
// arguments.
type SimpleArgFunc struct {

package cmd

import (
	"fmt"
	"os"
	"path"
	"path/filepath"
	"runtime"
	"sort"
	"testing"
)

// Test to check for different input arguments.
func TestReadDirFail(t *testing.T) {
	// Check non existent directory.
	if _, err := readDir("/tmp/non-existent-directory"); err != errFileNotFound {
		t.Fatalf("expected = %s, got: %s", errFileNotFound, err)
	}

         * @throws InvalidKeyException If the access key is invalid
         * @throws ErrorResponseException If the server returns an error
         * @throws IllegalArgumentException If the arguments are invalid
         * @throws InsufficientDataException If insufficient data is available
         * @throws InternalException If an internal error occurs
         * @throws InvalidResponseException If the response is invalid

    /**
     * Gets the directory of the topmost project being built, usually the current directory or the
     * directory pointed at by the {@code -f/--file} command line argument.
     *
     * @since 4.0.0
     */
    Path getTopDirectory();

    /**
     * Sets the root directory of the project.
     *
     * @since 4.0.0
     */

    }

    /**
     * Creates an instance of the given implementation using the given string, assumes a public string constructor.
     *
     * @param clazz The implementation type
     * @param value The string argument
     * @return Instance of given implementation, constructed using the given string
     */
    private static <T> T newImplementation(final Class<T> clazz, final String value) {
        try {

`values.yaml` file. Update these fields if you'd like to use a different strategy. Configuration ---------- Refer the [Values file](./values.yaml) for all the possible config fields. You can specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example, ```bash helm install --name my-release --set persistence.size=1Ti minio/minio ``` The above command deploys MinIO server with a 1Ti backing persistent volume. Alternately, you can provide a YAML file that specifies...

`values.yaml` file. Update these fields if you'd like to use a different strategy. Configuration ---------- Refer the [Values file](./values.yaml) for all the possible config fields. You can specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example, ```bash helm install --name my-release --set persistence.size=1Ti minio/minio ``` The above command deploys MinIO server with a 1Ti backing persistent volume. Alternately, you can provide a YAML file that specifies...