introduced to append the textual or binary representation of an object
to a byte slice. These interfaces provide the same functionality as
[TextMarshaler] and [BinaryMarshaler], but instead of allocating a new slice

# Pfad-Parameter und Validierung von Zahlen

So wie Sie mit `Query` für Query-Parameter zusätzliche Validierungen und Metadaten hinzufügen können, können Sie das mittels `Path` auch für Pfad-Parameter tun.

## `Path` importieren

Importieren Sie zuerst `Path` von `fastapi`, und importieren Sie `Annotated`.

//// tab | Python 3.10+

```Python hl_lines="1  3"
{!> ../../docs_src/path_params_numeric_validations/tutorial001_an_py310.py!}
```

////

Try the links below:
EOF
  # Find any "Streaming build results to" lines,
  # de-duplicate,
  # and print the last word from each
  awk '/Streaming build results to/ {print $NF}' "$TFCI_OUTPUT_DIR/script.log" | uniq
}

# Print out any ResultStore URLs for Bazel invocations' results.
# Each failed target there will have its own representation, making failures
# easier to find and read.
function resultstore_extract {

  # NOTE: All flags are optional
  # - filtering criteria only applies for all source objects match the criteria
  # - configurable notification endpoints
  # - configurable retries for the job (each retry skips successfully previously replaced objects)
  flags:
    filter:
      newerThan: "7d10h31s" # match objects newer than this value (e.g. 7d10h31s)

```

////

This means:

* The variable `prices` is a `dict`:
    * The keys of this `dict` are of type `str` (let's say, the name of each item).
    * The values of this `dict` are of type `float` (let's say, the price of each item).

#### Union

You can declare that a variable can be any of **several types**, for example, an `int` or a `str`.

  // proportion to their assured concurrency shares. This produces
  // the assured concurrency value (ACV) --- the number of requests
  // that may be executing at a time --- for each such priority
  // level:
  //
  //             ACV(l) = ceil( SCL * ACS(l) / ( sum[priority levels k] ACS(k) ) )
  //
  // bigger numbers of ACS mean more reserved concurrent requests (at the

  // proportion to their assured concurrency shares. This produces
  // the assured concurrency value (ACV) --- the number of requests
  // that may be executing at a time --- for each such priority
  // level:
  //
  //             ACV(l) = ceil( SCL * ACS(l) / ( sum[priority levels k] ACS(k) ) )
  //
  // bigger numbers of ACS mean more reserved concurrent requests (at the

///

```Python hl_lines="1"
{!> ../../docs_src/request_forms_and_files/tutorial001.py!}
```

////

## `File` und `Form`-Parameter definieren

Erstellen Sie Datei- und Formularparameter, so wie Sie es auch mit `Body` und `Query` machen würden:

//// tab | Python 3.9+

```Python hl_lines="10-12"
{!> ../../docs_src/request_forms_and_files/tutorial001_an_py39.py!}
```

////

//// tab | Python 3.8+

/// note | "Technische Details"

Sie könnten auch `from starlette.requests import Request` verwenden.

**FastAPI** bietet es als Komfort für Sie, den Entwickler, an. Aber es stammt direkt von Starlette.

///

### Vor und nach der `response`

Sie können Code hinzufügen, der mit dem `request` ausgeführt wird, bevor dieser von einer beliebigen *Pfadoperation* empfangen wird.

  /**
   * Creates a new instance with the specified edge directionality.
   *
   * @param directed if true, creates an instance for graphs whose edges are each directed; if
   *     false, creates an instance for graphs whose edges are each undirected.
   */
  AbstractGraphBuilder(boolean directed) {
    this.directed = directed;
  }