> cd doc
    > rm -r next/*
    > cp -r initial/* next

Then edit `next/1-intro.md` to refer to the next version.

To prepare the release notes for a release, run `golang.org/x/build/cmd/relnote generate`.

layout: article
---

<!--
This document is kept in the Go repo, not x/website,
because it documents the full list of known GODEBUG settings,
which are tied to a specific release.
-->

## Introduction {#intro}

Go's emphasis on backwards compatibility is one of its key strengths.
There are, however, times when we cannot maintain complete compatibility.
If code depends on buggy (including insecure) behavior,

needed by API systems is data "<abbr title="also called marshalling, conversion">serialization</abbr>" which is taking data from the code (Python) and converting it into something that can be sent through the network. For example, converting an object containing data from a database into a JSON object. Converting `datetime` objects into strings, etc.

Another big feature needed by APIs is data validation, making sure that the data is valid, given certain parameters. For example, that some...

# Python Types Intro

Python has support for optional "type hints" (also called "type annotations").

These **"type hints"** or annotations are a special syntax that allow declaring the <abbr title="for example: str, int, float, bool">type</abbr> of a variable.

By declaring types for your variables, editors and tools can give you better support.

* 🌐 Add Korean translation for Tutorial - Intro. PR [#2317](https://github.com/tiangolo/fastapi/pull/2317) by [@hard-coders](https://github.com/hard-coders).
* 🌐 Add Chinese translation for Tutorial - Bigger Applications - Multiple Files. PR [#2453](https://github.com/tiangolo/fastapi/pull/2453) by [@waynerv](https://github.com/waynerv).

            // DSL reference goes into dsl/
            task.from(extension.getDslReference().getRenderedDocumentation(), sub -> sub.into("dsl"));

            // Javadocs reference goes into javadoc/
            task.from(extension.getJavadocs().getRenderedDocumentation(), sub -> sub.into("javadoc"));

            // Dokka Kotlin DSL reference goes into kotlin-dsl/

/**
 * Handles profile injection into the model.
 *
 */
public interface ProfileInjector {

    /**
     * Merges values from the specified profile into the given model. Implementations are expected to keep the profile
     * and model completely decoupled by injecting deep copies rather than the original objects from the profile.
     *

/**
 * Handles the import of dependency management from other models into the target model.
 *
 */
public interface DependencyManagementImporter {

    /**
     * Imports the specified dependency management sections into the given target model.
     *
     * @param target The model into which to import the dependency management section, must not be <code>null</code>.

import org.apache.maven.api.services.ModelProblemCollector;

/**
 * Handles injection of plugin management into the model.
 *
 */
public interface PluginManagementInjector {

    /**
     * Merges default values from the plugin management section of the given model into itself.
     *
     * @param model The model into which to merge the values specified by its plugin management section, must not be
     *            <code>null</code>.

import org.apache.maven.api.services.ModelProblemCollector;

/**
 * Handles injection of dependency management into the model.
 *
 */
public interface DependencyManagementInjector {

    /**
     * Merges default values from the dependency management section of the given model into itself.
     *
     * @param model The model into which to merge the values specified by its dependency management sections, must not