# Introduction aux Types Python

Python supporte des annotations de type (ou *type hints*) optionnelles.

Ces annotations de type constituent une syntaxe spéciale qui permet de déclarer le <abbr title="par exemple : str, int, float, bool">type</abbr> d'une variable.

En déclarant les types de vos variables, cela permet aux différents outils comme les éditeurs de texte d'offrir un meilleur support.

      } else if (type == char.class) {
        return (T) Character.valueOf('\0');
      } else if (type == byte.class) {
        return (T) Byte.valueOf((byte) 0);
      } else if (type == short.class) {
        return (T) Short.valueOf((short) 0);
      } else if (type == int.class) {
        return (T) Integer.valueOf(0);
      } else if (type == long.class) {
        return (T) Long.valueOf(0L);
      } else if (type == float.class) {

package clause

import "gorm.io/gorm/utils"

type JoinType string

const (
	CrossJoin JoinType = "CROSS"
	InnerJoin JoinType = "INNER"
	LeftJoin  JoinType = "LEFT"
	RightJoin JoinType = "RIGHT"
)

type JoinTarget struct {
	Type        JoinType
	Association string
	Subquery    Expression
	Table       string
}

func Has(name string) JoinTarget {
	return JoinTarget{Type: InnerJoin, Association: name}
}

    /**
     * Unwrap the referral data to a specific implementation type
     *
     * @param <T> the target type to unwrap to
     * @param type the class of the target type
     * @return the referral adapted to type
     * @throws ClassCastException
     *             if the type is not valid for this object
     */
    <T extends DfsReferralData> T unwrap(Class<T> type);

    /**
     * Get the server this referral points to
     *

pkg syscall (freebsd-riscv64), type Dirent struct, Reclen uint16 #53466
pkg syscall (freebsd-riscv64), type Dirent struct, Type uint8 #53466
pkg syscall (freebsd-riscv64), type FdSet struct #53466
pkg syscall (freebsd-riscv64), type FdSet struct, X__fds_bits [16]uint64 #53466
pkg syscall (freebsd-riscv64), type Flock_t struct #53466
pkg syscall (freebsd-riscv64), type Flock_t struct, Len int64 #53466

pkg io/fs, method (FileMode) Type() FileMode
pkg io/fs, type DirEntry interface { Info, IsDir, Name, Type }
pkg io/fs, type DirEntry interface, Info() (FileInfo, error)
pkg io/fs, type DirEntry interface, IsDir() bool
pkg io/fs, type DirEntry interface, Name() string
pkg io/fs, type DirEntry interface, Type() FileMode
pkg io/fs, type FS interface { Open }
pkg io/fs, type FS interface, Open(string) (File, error)

This will make `tags` be a list, although it doesn't declare the type of the elements of the list.

## List fields with type parameter { #list-fields-with-type-parameter }

But Python has a specific way to declare lists with internal types, or "type parameters":

### Import typing's `List` { #import-typings-list }

In Python 3.9 and above you can use the standard `list` to declare these type annotations as we'll see below. 💡

    }

    /**
     * Checks if the AV pairs list contains a pair of the specified type
     *
     * @param pairs the list of AV pairs to search
     * @param type the AV pair type to look for
     * @return whether the list contains a pair of that type
     */
    public static boolean contains(final List<AvPair> pairs, final int type) {
        if (pairs == null) {
            return false;
        }

	}
	return nil
}

// BatchJobReplicateTarget describes target element of the replication job that receives
// the filtered data from source
type BatchJobReplicateTarget struct {
	Type     BatchJobReplicateResourceType `yaml:"type" json:"type"`
	Bucket   string                        `yaml:"bucket" json:"bucket"`
	Prefix   string                        `yaml:"prefix" json:"prefix"`

         */
        Type type();
    }

    interface PhasePointer extends Pointer {
        /**
         * Returns the type of pointer, which is always PROJECT for a PhasePointer.
         *
         * @return the PROJECT pointer type
         */
        @Override
        default Type type() {
            return Type.PROJECT;
        }
    }