///

## Import `File` { #import-file }

Import `File` and `UploadFile` from `fastapi`:

{* ../../docs_src/request_files/tutorial001_an_py39.py hl[3] *}

## Define `File` Parameters { #define-file-parameters }

Create file parameters the same way you would for `Body` or `Form`:

{* ../../docs_src/request_files/tutorial001_an_py39.py hl[9] *}

/// info

`File` is a class that inherits directly from `Form`.

```

///

## Import `Form` { #import-form }

Import `Form` from `fastapi`:

{* ../../docs_src/request_forms/tutorial001_an_py39.py hl[3] *}

## Define `Form` parameters { #define-form-parameters }

Create form parameters the same way you would for `Body` or `Query`:

{* ../../docs_src/request_forms/tutorial001_an_py39.py hl[9] *}

# Query Parameters and String Validations { #query-parameters-and-string-validations }

**FastAPI** allows you to declare additional information and validation for your parameters.

Let's take this application as example:

{* ../../docs_src/query_params_str_validations/tutorial001_py310.py hl[7] *}

    return create(type, subtype, parameters);
  }

  /**
   * Replaces all parameters with the given attribute with parameters using the given
   * values. If there are no values, any existing parameters with the given attribute are removed.
   *
   * @throws IllegalArgumentException if either {@code attribute} or {@code values} is invalid
   * @since 24.0
   */

        }
    }

    /**
     * Stores a list of crawling information parameters in batch.
     * Sets the creation time for any parameters that don't have it set,
     * then performs a batch insert operation with immediate refresh.
     *
     * @param crawlingInfoParamList the list of crawling information parameters to store
     * @throws FessSystemException if the parameter list is null
     */

import com.github.ajalt.clikt.parameters.arguments.argument
import com.github.ajalt.clikt.parameters.arguments.help
import com.github.ajalt.clikt.parameters.options.default
import com.github.ajalt.clikt.parameters.options.flag
import com.github.ajalt.clikt.parameters.options.help
import com.github.ajalt.clikt.parameters.options.multiple
import com.github.ajalt.clikt.parameters.options.option

 * This class provides a convenient wrapper around a Map to store and retrieve
 * data store specific parameters with type-safe access methods.
 *
 * <p>The class uses a ParamMap internally which provides case format conversion
 * between camelCase and snake_case parameter names for flexible parameter access.
 * Parameters can be stored as any Object type and retrieved with type conversion

```

///

## Import `File` and `Form` { #import-file-and-form }

{* ../../docs_src/request_forms_and_files/tutorial001_an_py39.py hl[3] *}

## Define `File` and `Form` parameters { #define-file-and-form-parameters }

Create file and form parameters the same way you would for `Body` or `Query`:

{* ../../docs_src/request_forms_and_files/tutorial001_an_py39.py hl[10:12] *}

      ImmutableListMultimap.of("a", "1", "a", "2", "b", "3");

  public void testGetParameters() {
    assertEquals(ImmutableListMultimap.of(), MediaType.parse("text/plain").parameters());
    assertEquals(
        ImmutableListMultimap.of("charset", "utf-8"),
        MediaType.parse("application/atom+xml; charset=utf-8").parameters());

  /** True if the agreed upon extension parameters includes "client_no_context_takeover". */
  @JvmField val clientNoContextTakeover: Boolean = false,
  /** Should be a value in [8..15]. Any value in that range is acceptable by OkHttp. */
  @JvmField val serverMaxWindowBits: Int? = null,
  /** True if the agreed upon extension parameters includes "server_no_context_takeover". */