# Introdução aos tipos Python

O Python possui suporte para "dicas de tipo" ou "type hints" (também chamado de "anotações de tipo" ou "type annotations")

Esses **"type hints"** são uma sintaxe especial que permite declarar o <abbr title = "por exemplo: str, int, float, bool">tipo</abbr> de uma variável.

Ao declarar tipos para suas variáveis, editores e ferramentas podem oferecer um melhor suporte.

benefícios (e.g. *concorrência estruturada*).

Eu criei outra biblioteca em cima do AnyIO, como uma fina camada acima, para melhorar um pouco as anotações de tipo e obter melhor **autocompletar**, **erros de linha**, etc. Ela também possui uma introdução amigável e um tutorial para ajudar você a **entender** e escrever **seu próprio código async**: <a href="https://asyncer.tiangolo.com/" class="external-link" target="_blank">Asyncer</a>. Seria particularmente útil se você precisar **combinar código...

// If Next encounters a non-local name (as defined by [filepath.IsLocal])
// and the GODEBUG environment variable contains `tarinsecurepath=0`,
// Next returns the header with an [ErrInsecurePath] error.
// A future version of Go may introduce this behavior by default.
// Programs that want to accept non-local names can ignore
// the [ErrInsecurePath] error and use the returned header.
func (tr *Reader) Next() (*Header, error) {
	if tr.err != nil {

# Alternativas, Inspiração e Comparações

O que inspirou o **FastAPI**, como ele se compara às alternativas e o que FastAPI aprendeu delas.

## Introdução

**FastAPI** não poderia existir se não fosse pelos trabalhos anteriores de outras pessoas.

Houveram tantas ferramentas criadas que ajudaram a inspirar sua criação.

The Go memory model restricts compiler optimizations as much as it does Go programs.
Some compiler optimizations that would be valid in single-threaded programs are not valid in all Go programs.
In particular, a compiler must not introduce writes that do not exist in the original program,
it must not allow a single read to observe multiple values,
and it must not allow a single write to write multiple values.
</p>

<p>

  // For a (long) discussion about this specific issue and the general futility of life.
  //
  // For the time being we are OK with the problem discussed above since it requires a caller to
  // introduce a very specific kind of data-race. And given the other operations performed by these
  // methods that involve volatile read/write operations, in practice there is no issue. Also, the

 * <p>This version is much more verbose than the {@code synchronized} version, and still suffers
 * from the need for the programmer to remember to use {@code while} instead of {@code if}. However,
 * one advantage is that we can introduce two separate {@code Condition} objects, which allows us to
 * use {@code signal()} instead of {@code signalAll()}, which may be a performance benefit.
 *
 * {@snippet :
 * public class SafeBox<V> {
 *   private V value;

          </annotations>
        </field>
        <field>
          <name>dependencies</name>
          <description>Additional dependencies that this project needs to introduce to the plugin's
            classloader.</description>
          <version>4.0.0+</version>
          <association>
            <type>Dependency</type>
            <multiplicity>*</multiplicity>

* Adding events to federation control plane ([#30421](https://github.com/kubernetes/kubernetes/pull/30421), [@nikhiljindal](https://github.com/nikhiljindal))
* [kubelet] Introduce --protect-kernel-defaults flag to make the tunable behaviour configurable ([#27874](https://github.com/kubernetes/kubernetes/pull/27874), [@ingvagabund](https://github.com/ingvagabund))

impl.Register("aes", "AES-NI", &supportsAES) } if cpu.ARM64 { impl.Register("aes", "Armv8.0", &supportsAES) } if cpu.PPC64 || cpu.PPC64le { // The POWER architecture doesn't have a way to turn off AES support // at runtime with GODEBUG=cpu.something=off, so introduce a new GODEBUG // knob for that. It's intentionally only checked at init() time, to // avoid the performance overhead of checking it every time. if godebug.Value("#ppc64aes") == "off" { supportsAES = false } impl.Register("aes", "POWER8", &supportsAES)...