As it is discouraged, the interactive docs with Swagger UI won't show the documentation for the body when using `GET`, and proxies in the middle might not support it.

///

## Import Pydantic's `BaseModel` { #import-pydantics-basemodel }

First, you need to import `BaseModel` from `pydantic`:

{* ../../docs_src/body/tutorial001_py310.py hl[2] *}

		}
		a[na] = s[fieldStart:i:i]
		na++
		i++
		// Skip spaces in between fields.
		for i < len(s) && asciiSpace[s[i]] != 0 {
			i++
		}
		fieldStart = i
	}
	if fieldStart < len(s) { // Last field might end at EOF.
		a[na] = s[fieldStart:len(s):len(s)]
	}
	return a
}

// FieldsFunc interprets s as a sequence of UTF-8-encoded code points.
// It splits the slice s at each run of code points c satisfying f(c) and

Keep in mind that this means that the whole contents will be stored in memory. This will work well for small files.

But there are several cases in which you might benefit from using `UploadFile`.

## File Parameters with `UploadFile` { #file-parameters-with-uploadfile }

Define a file parameter with a type of `UploadFile`:

//     specific system recommendations based on current support case statistics and storage performance possibilities.
//     Vendors might change the settings based on the configuration and scale out of the solution (more storage nodes =>
//     higher task limit).
//
//     <S3ConcurrentTaskLimit>
//

You can also create an environment variable only for a **specific program invocation**, that is only available to that program, and only for its duration.

To do that, create it right before the program itself, on the same line:

<div class="termy">

```console
// Create an env var MY_NAME in line for this program call
$ MY_NAME="Wade Wilson" python main.py

And then, right after the `yield`, we unload the model. This code will be executed **after** the application **finishes handling requests**, right before the *shutdown*. This could, for example, release resources like memory or a GPU.

/// tip

Es ist sehr einfach und intuitiv. Es ist so konzipiert, dass es leicht erweiterbar ist und über modulare Komponenten verfügt.

Es bietet:

* Eine sehr beeindruckende Leistung.
* WebSocket-Unterstützung.
* Hintergrundtasks im selben Prozess.
* Startup- und Shutdown-Events.

So, you can use it with:

{* ../../docs_src/path_params/tutorial004_py39.py hl[6] *}

/// tip

You might need the parameter to contain `/home/johndoe/myfile.txt`, with a leading slash (`/`).

In that case, the URL would be: `/files//home/johndoe/myfile.txt`, with a double slash (`//`) between `files` and `home`.

///

        add {
            failOnText {
                conditionType = BuildFailureOnText.ConditionType.CONTAINS
                pattern = "%unmaskedFakeCredentials%"
                failureMessage = "This build might be leaking credentials"
                reverse = false
                stopBuildOnFailure = true
            }
        }
    }

    if (os !in listOf(Os.WINDOWS, Os.MACOS)) {
        steps {

			if !meta.Deleted {
				if len(meta.Erasure.Distribution) != len(onlineDisks) {
					// Erasure distribution is not the same as onlineDisks
					// attempt a fix if possible, assuming other entries
					// might have the right erasure distribution.
					partsMetadata[i] = FileInfo{}
					metaErrs[i] = errFileCorrupt
					onlineDisks[i] = nil
					continue
				}
			}
		}
	}

	// Copy meta errors to part errors