So, the interactive docs will have all the information from these dependencies too:

<img src="/img/tutorial/dependencies/image01.png">

## Simple usage { #simple-usage }

If you look at it, *path operation functions* are declared to be used whenever a *path* and *operation* matches, and then **FastAPI** takes care of calling the function with the correct parameters, extracting the data from the request.

  If it is not possible or desirable to put the notice in a particular
  file, then You may include the notice in a location (such as a LICENSE
  file in a relevant directory) where a recipient would be likely to
  look for such a notice.

The idea is to automate the acquisition and renewal of these certificates so that you can have **secure HTTPS, for free, forever**.

## HTTPS for Developers { #https-for-developers }

Here's an example of how an HTTPS API could look like, step by step, paying attention mainly to the ideas important for developers.

### Domain Name { #domain-name }

// is encrypted, compressed or uploaded using
// the S3 multipart API then its ETag is not
// necessarily the MD5 of the object content.
//
// For a more detailed description of S3 ETags
// take a look at the package documentation.
type ETag []byte

// String returns the string representation of the ETag.
//
// The returned string is a hex representation of the

        cliRequest.topDirectory = topDirectory;
        // We're very early in the process, and we don't have the container set up yet,
        // so we rely on the JDK services to eventually look up a custom RootLocator.
        // This is used to compute {@code session.rootDirectory} but all {@code project.rootDirectory}
        // properties will be computed through the RootLocator found in the container.

@REM Find the project basedir, i.e., the directory that contains the directory ".mvn".
@REM Fallback to current working directory if not found.

set "EXEC_DIR=%CD%"
set "WDIR=%EXEC_DIR%"

@REM Look for the --file switch and start the search for the .mvn directory from the specified
@REM POM location, if supplied.

set FILE_ARG=
:arg_loop
if "%~1" == "-f" (
  set "FILE_ARG=%~2"
  shift

# First Steps { #first-steps }

The simplest FastAPI file could look like this:

{* ../../docs_src/first_steps/tutorial001_py39.py *}

Copy that to a file `main.py`.

Run the live server:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:solid">main.py</u>

  <span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting development server 🚀

          distribution: 'zulu'
          java-version: 17

      - name: Setup Gradle
        uses: gradle/actions/setup-gradle@v5

      - name: Run Tests
        run: ./gradlew test allTests -Dokhttp.platform=loom -Dtest.java.version=24 -PcontainerTests=true


  testandroidregression:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    if: contains(github.event.pull_request.labels.*.name, 'android-regression')

dClass("position-static"),this._popper=new a.default(l,this._menu,this._getPopperConfig())}"ontouchstart"in document.documentElement&&0===o.default(s).closest(".navbar-nav").length&&o.default(document.body).children().on("mouseover",null,o.default.noop),this._element.focus(),this._element.setAttribute("aria-expanded",!0),o.default(this._menu).toggleClass(J),o.default(s).toggleClass(J).trigger(o.default.Event("shown.bs.dropdown",n))}}},e.hide=function(){if(!this._element.disabled&&!o.default(this...

                if (ch == '[') {
                    String server = str.substring(mark, si).trim();
                    if (server.length() == 0) {
                        // this can also be a v6 address within brackets, look ahead required
                        final int nexts = str.indexOf('[', si + 1);
                        final int nexte = str.indexOf(']', si);
                        if (nexts >= 0 && nexte >= 0 && nexte == nexts - 1) {