assertThrows(IllegalArgumentException.class, Stats::meanOf);
    assertThrows(IllegalArgumentException.class, () -> Stats.meanOf(ImmutableList.<Number>of()));
    assertThat(Stats.meanOf(ONE_VALUE)).isWithin(ALLOWED_ERROR).of(ONE_VALUE);
    assertThat(Stats.meanOf(POSITIVE_INFINITY)).isPositiveInfinity();
    assertThat(Stats.meanOf(NEGATIVE_INFINITY)).isNegativeInfinity();
    assertThat(Stats.meanOf(NaN)).isNaN();

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all

    public static final String INCLUDES_DEPENDENCIES = "includesDependencies";

    /**
     * A boolean flag indicating whether the artifact is meant to be used for the compile/runtime/test build path of a
     * consumer project.
     * <p>
     * Note: This property is about "build path", whatever it means in the scope of the consumer project. It is NOT

{* ../../docs_src/python_types/tutorial010_py310.py hl[6] *}

And then, again, you get all the editor support:

<img src="/img/python-types/image06.png">

Notice that this means "`one_person` is an **instance** of the class `Person`".

It doesn't mean "`one_person` is the **class** called `Person`".

## Pydantic models { #pydantic-models }

[Pydantic](https://docs.pydantic.dev/) is a Python library to perform data validation.

</div>

/// details | What that command means

* `echo "*"`: will "print" the text `*` in the terminal (the next part changes that a bit)
* `>`: anything printed to the terminal by the command to the left of `>` should not be printed but instead written to the file that goes to the right of `>`
* `.gitignore`: the name of the file where the text should be written

that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity. "You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License. "Source" form shall mean the preferred form for making modifications, including but not...

This is similar to the 200 HTTP status codes (from 200 to 299). Those "200" status codes mean that somehow there was a "success" in the request.

The status codes in the 400 range mean that there was an error from the client.

Remember all those **"404 Not Found"** errors (and jokes)?

## Use `HTTPException` { #use-httpexception }

     * nothing somehow goes wrong as the JDK restricts access to Unsafe.
     */
    checkHelperVersion(NO_UNSAFE, "AtomicReferenceFieldUpdaterAtomicHelper");
    /*
     * SynchronizedHelper is meant for Android, but our best way to test it is under the JVM.
     *
     * SynchronizedHelper also ends up getting used under the JVM during
     * AggregateFutureStateFallbackAtomicHelperTest, as discussed in a comment in

 * parameters.
 *
 * @author mike nonemacher
 */
@NullUnmarked
class CacheBuilderFactory {
  // Default values contain only 'null', which means don't call the CacheBuilder method (just give
  // the CacheBuilder default).
  private Set<Integer> concurrencyLevels = Sets.newHashSet((Integer) null);
  private Set<Integer> initialCapacities = Sets.newHashSet((Integer) null);

{* ../../docs_src/body_nested_models/tutorial009_py310.py hl[7] *}

/// tip

Keep in mind that JSON only supports `str` as keys.

But Pydantic has automatic data conversion.

This means that, even though your API clients can only send strings as keys, as long as those strings contain pure integers, Pydantic will convert them and validate them.