Por exemplo, você pode definir um arquivo `main.py` com o seguinte código:

```Python hl_lines="3"
import os

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

/// dica

O segundo parâmetro em <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 para o retorno.

				b[i+j] = byte(0)
			}
		}
	}
}

var bmbuf []byte

func valName(x int) string {
	if s := x >> 20; s<<20 == x {
		return fmt.Sprintf("%dM", s)
	}
	if s := x >> 10; s<<10 == x {
		return fmt.Sprintf("%dK", s)
	}
	return fmt.Sprint(x)
}

func benchBytes(b *testing.B, sizes []int, f func(b *testing.B, n int)) {
	for _, n := range sizes {
		if isRaceBuilder && n > 4<<10 {
			continue

		size:          actualSize,
		offset:        0,
		reader:        nil,
	}
}

// Seek call to implement io.Seeker
func (rsc *ObjectReadSeekCloser) Seek(offset int64, whence int) (int64, error) {
	// fmt.Printf("actual: %v offset: %v (%v) whence: %v\n", rsc.size, offset, rsc.offset, whence)
	switch whence {
	case io.SeekStart:
		rsc.offset = offset
	case io.SeekCurrent:
		rsc.offset += offset
	case io.SeekEnd:

		if envOnly {
			key = config.EnvPrefix + strings.ToTitle(subSys) + config.EnvWordDelimiter + strings.ToTitle(madmin.EnableKey)
		}
		help = append(help, config.HelpKV{
			Key:         key,
			Description: fmt.Sprintf("enable %s target, default is 'off'", subSys),
			Optional:    false,
			Type:        "on|off",
		})
	}

	for _, hkv := range h {
		key := hkv.Key
		if envOnly {

		return err
	}
	return nil
}

func TestPropagateUnscoped(t *testing.T) {
	_DB, err := OpenTestConnection(&gorm.Config{
		PropagateUnscoped: true,
	})
	if err != nil {
		log.Printf("failed to connect database, got error %v", err)
		os.Exit(1)
	}

	_DB.Migrator().DropTable(&Product6{}, &ProductItem2{})
	_DB.AutoMigrate(&Product6{}, &ProductItem2{})

	p := Product6{

	}

	lockRetryBackOff = backoffWait(
		lockRetryMinInterval,
		100*time.Millisecond,
		5*time.Second,
	)
}

func log(format string, data ...interface{}) {
	if dsyncLog {
		console.Printf(format, data...)
	}
}

const (
	// dRWMutexAcquireTimeout - default tolerance limit to wait for lock acquisition before.
	drwMutexAcquireTimeout = 1 * time.Second // 1 second.

                                        <la:text styleId="doc.boost"
                                                 property="doc.boost" styleClass="form-control"
                                                 title="Floating point number" required="required"
                                                 data-validation="custom"
                                                 data-validation-regexp="(\+|\-)?\d+(\.\d+)?((e|E)(\+|\-)?\d+)?"

	for i, testApp := range testApps {
		configCmds := []string{
			fmt.Sprintf("identity_openid:%d", i),
			fmt.Sprintf("config_url=%s/.well-known/openid-configuration", testApp.ProviderURL),
			fmt.Sprintf("client_id=%s", testApp.ClientID),
			fmt.Sprintf("client_secret=%s", testApp.ClientSecret),
			"scopes=openid,groups",
			fmt.Sprintf("redirect_uri=%s", testApp.RedirectURL),
		}
		if rolePolicies[i] != "" {

			case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64:
				field.ReflectValueOf(ctx, value).SetString(utils.ToString(data))
			case float64, float32:
				field.ReflectValueOf(ctx, value).SetString(fmt.Sprintf("%."+strconv.Itoa(field.Precision)+"f", data))
			default:
				return fallbackSetter(ctx, value, v, field.Set)
			}
			return err
		}
	default:
		fieldValue := reflect.New(field.FieldType)

		},
	}

	for testID, tt := range tests {
		rng := rand.New(rand.NewSource(0))
		// Run for a number of times, shuffling the input to ensure that output is consistent.
		for i := 0; i < 10; i++ {
			t.Run(fmt.Sprintf("test-%d-%s-run-%d", testID, tt.name, i), func(t *testing.T) {
				if i > 0 {
					rng.Shuffle(len(tt.m), func(i, j int) {
						tt.m[i], tt.m[j] = tt.m[j], tt.m[i]
					})
				}