private
fun makePropagatedEnvironment(): MutableMap<String, String> {
    val result = HashMap<String, String>()
    for (key in propagatedEnvironmentVariables) {
        val value = System.getenv(key)
        if (value != null) {
            result[key] = value
        }
    }
    return result

/// tip | İpucu

**FastAPI**'ı düzgün (ve önerilen) şekilde öğrenmek istiyorsanız [Öğretici - Kullanıcı Rehberi](../tutorial/index.md){.internal-link target=_blank}'ni bölüm bölüm okuyun.

        value = values.getlist(alias)
    else:
        value = values.get(alias, None)
    if (
        value is None
        or (
            isinstance(field.field_info, params.Form)
            and isinstance(value, str)  # For type checks
            and value == ""
        )
        or (is_sequence_field(field) and len(value) == 0)
    ):
        if field.required:

					return index
				}
			}
		}
	}

	return nil
}

func parseFieldIndexes(field *Field) (indexes []Index, err error) {
	for _, value := range strings.Split(field.Tag.Get("gorm"), ";") {
		if value != "" {
			v := strings.Split(value, ":")
			k := strings.TrimSpace(strings.ToUpper(v[0]))
			if k == "INDEX" || k == "UNIQUEINDEX" {
				var (
					name       string

```

/// tip

The second argument to <a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> is the default value to return.

If not provided, it's `None` by default, here we provide `"World"` as the default value to use.

///

Then you could call that Python program:

//// tab | Linux, macOS, Windows Bash

<div class="termy">

```console

        if (rangeValue.value.length() <= 0) {
            return isLeft ? 1 : -1;
        }

        value = FILTER_1.matcher(value).replaceAll("");

        List<String> valueTokens = new ArrayList<>(Arrays.asList(FILTER_2.split(value)));
        List<String> rangeValueTokens = new ArrayList<>(Arrays.asList(FILTER_3.split(rangeValue.value)));

        addZeroTokens(valueTokens, 3);

    - Copy the OAuth Client Key as the value for `<CLIENT_ID>`.
    - Copy the OAuth Client Secret as the value for `<CLIENT_SECRET>`.
  - By default, `<IS_HOST>` is localhost. However, if using a public IP, the respective IP address or domain needs to be specified.
  - By default, `<IS_HTTPS_PORT>` has been set to 9443. However, if the port offset has been incremented by n, the default port value needs to be incremented by n.

Request

```

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package config

// Config value separator
const (
	ValueSeparator = ","
)

// Top level common ENVs
const (
	EnvAccessKey    = "MINIO_ACCESS_KEY"
	EnvSecretKey    = "MINIO_SECRET_KEY"
	EnvRootUser     = "MINIO_ROOT_USER"

	echo "BUG: Algorithm: '${rep_obj1_algo}' of replicated object: 'minio2/test-bucket/encrypted' doesn't match with source value: '${src_obj1_algo}'"
	exit_1
fi
if [ "${rep_obj1_keyid}" != "${src_obj1_keyid}" ]; then
	echo "BUG: KeyId: '${rep_obj1_keyid}' of replicated object: 'minio2/test-bucket/encrypted' doesn't match with source value: '${src_obj1_keyid}'"
	exit_1
fi
if [ "${rep_obj2_algo}" != "${src_obj2_algo}" ]; then

/// note

FastAPI will know that the value of `q` is not required because of the default value `= None`.

The `str | None` (Python 3.10+) or `Union` in `Union[str, None]` (Python 3.9+) is not used by FastAPI to determine that the value is not required, it will know it's not required because it has a default value of `= None`.