This can be used as a quick shortcut if you have only one Pydantic model and want to remove some data from the output.

!!! tip
    But it is still recommended to use the ideas above, using multiple classes, instead of these parameters.

The most common way to do it is to have a file `requirements.txt` with the package names and their versions, one per line.

You would of course use the same ideas you read in [About FastAPI versions](versions.md){.internal-link target=_blank} to set the ranges of versions.

For example, your `requirements.txt` could look like:

```
fastapi>=0.112.0,<0.113.0

// its type, and we use Go rules to resolve. Note there is no such thing as
// a uint ideal constant in this situation - the value must be of int type.
func (s *state) idealConstant(constant *parse.NumberNode) reflect.Value {
	// These are ideal constants but we don't know the type
	// and we have no context.  (If it was a method argument,

		// section. We need to mark all "referenced" symbols from that carrier,
		// so we make sure we're pulling in all outer symbols, and their sub
		// symbols. This is not ideal, and these carrier/section symbols could
		// be removed.
		if d.ldr.IsExternal(symIdx) {
			d.mark(d.ldr.OuterSym(symIdx), symIdx)
			d.mark(d.ldr.SubSym(symIdx), symIdx)
		}

		if len(methods) != 0 {

    * Sistemas de clientes de geração de código automáticos, para muitas linguagens.
* Fornecer diretamente 2 interfaces _web_ de documentação interativa.

---

Nós arranhamos apenas a superfície, mas você já tem idéia de como tudo funciona.

Experimente mudar a seguinte linha:

```Python
    return {"item_name": item.name, "item_id": item_id}
```

...de:

```Python
        ... "item_name": item.name ...

      do-single-node-upgrade "${instance}" & pids+=("$!")

      # We don't want to run more than ${node_upgrade_parallelism} upgrades at a time,
      # so wait once we hit that many nodes. This isn't ideal, since one might take much
      # longer than the others, but it should help.
      process_count_left=$((process_count_left - 1))
      if [[ process_count_left -eq 0 || "${instance}" == "${instances[-1]}" ]]; then

* Fournir directement 2 interfaces web de documentation interactive.

---

Nous n'avons fait qu'effleurer la surface, mais vous avez déjà une idée de la façon dont tout cela fonctionne.

Essayez de changer la ligne contenant :

```Python
    return {"item_name": item.name, "item_id": item_id}
```

... de :

```Python

		// function at the same time. While the results in
		// that case are unpredictable, if we just use r here,
		// and we are using a seed, we will most likely return
		// the same value for both calls. That doesn't seem ideal.
		// Just use the first one to get in.
		return globalRandGenerator.Load()
	}

	return r
}

//go:linkname runtime_rand runtime.rand
func runtime_rand() uint64

		{"lol", true},
		{"1-this-is-valid", true},
		{"1-this-too-is-valid-1", true},
		{"this.works.too.1", true},
		{"1234567", true},
		{"123", true},
		{"s3-eu-west-1.amazonaws.com", true},
		{"ideas-are-more-powerful-than-guns", true},
		{"testbucket", true},
		{"1bucket", true},
		{"bucket1", true},
		{"a.b", true},
		{"ab.a.bc", true},
		// cases for which test should fail.

	}
	defer of.Close()

	if len(of.Arches) == 0 {
		return nil, fmt.Errorf("empty fat Mach-O file: %s", name)
	}

	var arch macho.Cpu
	// Use the host architecture.
	// TODO: This is not ideal because the host architecture may not be the one
	// that was profiled. E.g. an amd64 host can profile a 386 program.
	switch runtime.GOARCH {
	case "386":
		arch = macho.Cpu386
	case "amd64", "amd64p32":