Vous devez vous assurer qu'il est unique pour chaque opération.

```Python hl_lines="6"

### New unique package

The new [unique](/pkg/unique) package provides facilities for
canonicalizing values (like "interning" or "hash-consing").

Any value of comparable type may be canonicalized with the new
`Make[T]` function, which produces a reference to a canonical copy of
the value in the form of a `Handle[T]`.
Two `Handle[T]` are equal if and only if the values used to produce the
handles are equal, allowing programs to deduplicate values and reduce

pkg unique, func Make[$0 comparable]($0) Handle[$0] #62483
pkg unique, method (Handle[$0]) Value() $0 #62483

* Data validation.
* Automatic annotation and documentation.

## Other data types

Here are some of the additional data types you can use:

* `UUID`:
    * A standard "Universally Unique Identifier", common as an ID in many databases and systems.
    * In requests and responses will be represented as a `str`.
* `datetime.datetime`:
    * A Python `datetime.datetime`.

  // +optional
  optional string name = 1;

  // GenerateName is an optional prefix, used by the server, to generate a unique
  // name ONLY IF the Name field has not been provided.
  // If this field is used, the name returned to the client will be different
  // than the name passed. This value will also be combined with a unique suffix.
  // The provided value has the same validation rules as the Name field,

}

// APIResourceDiscovery provides information about an API resource for discovery.
message APIResourceDiscovery {
  // resource is the plural name of the resource.  This is used in the URL path and is the unique identifier
  // for this resource across all versions in the API group.
  // Resources with non-empty groups are located at /apis/<APIGroupDiscovery.objectMeta.name>/<APIVersionDiscovery.version>/<APIResourceDiscovery.Resource>

}

// UserInfo holds the information about the user needed to implement the
// user.Info interface.
message UserInfo {
  // The name that uniquely identifies this user among all active users.
  // +optional
  optional string username = 1;

  // A unique value that identifies this user across time. If this user is
  // deleted and another user by the same name is added, they will have
  // different UIDs.

    ksd-->mcsc
    nsc-->ksd
    wes-->ksd
    iwh-->ksd
    aex-->ksd
```

#### VMs

Virtual Machine support consists of two controllers.

    {!> ../../../docs_src/body_nested_models/tutorial002.py!}
    ```

## Set types

But then we think about it, and realize that tags shouldn't repeat, they would probably be unique strings.

And Python has a special data type for sets of unique items, the `set`.

Then we can declare `tags` as a set of strings:

=== "Python 3.10+"

    ```Python hl_lines="12"

# function as an implicit first `if` for every automation in the file.

# You can define multiple automations in a .cm file, but each automation name should be unique
# within the file.  We keep each automation (or very closely related group of automations) in
# its own file.

on:
  - pr_created
  - commit
  - comment_added

automations: