{* ../../docs_src/path_params/tutorial005.py hl[16] *}

### Check the docs { #check-the-docs }

Because the available values for the *path parameter* are predefined, the interactive docs can show them nicely:

<img src="/img/tutorial/path-params/image03.png">

### Working with Python *enumerations* { #working-with-python-enumerations }

The value of the *path parameter* will be an *enumeration member*.

</div>

I'm the creator of **FastAPI**. You can read more about that in [Help FastAPI - Get Help - Connect with the author](help-fastapi.md#connect-with-the-author){.internal-link target=_blank}.

...But here I want to show you the community.

---

**FastAPI** receives a lot of support from the community. And I want to highlight their contributions.

These are the people that:

                                // Account locked out - this is expected behavior in concurrent scenario
                                blockedAttempts.incrementAndGet();
                                break; // Stop trying if account is locked
                            }

                            if (!allowed) {
                                // Rate limited but not locked out

          // can actually be done anyway with the supposed 8+ exbibytes of data the source is
          // claiming to have if we get here, so just stop.
          return Optional.of(Long.MAX_VALUE);
        }
      }
      return Optional.of(result);
    }

    @Override
    public long size() throws IOException {
      long result = 0L;

    /** Status constant representing failed operation. */
    public static final String FAIL = "fail";

    /** Status constant representing stopped state. */
    public static final String STOP = "stop";

    /** Constant representing automatic mode. */
    public static final String AUTO = "auto";

    /** Constant representing no value or empty state. */
    public static final String NONE = "none";

$end-color);\n}\n\n@mixin gradient-x-three-colors($start-color: $blue, $mid-color: $purple, $color-stop: 50%, $end-color: $red) {\n  background-image: linear-gradient(to right, $start-color, $mid-color $color-stop, $end-color);\n}\n\n@mixin gradient-y-three-colors($start-color: $blue, $mid-color: $purple, $color-stop: 50%, $end-color: $red) {\n  background-image: linear-gradient($start-color, $mid-color $color-stop, $end-color);\n}\n\n@mixin gradient-radial($inner-color: $gray-700, $outer-color: $gray-800)...

round:"pink",color:"#FF0000",fontWeight:"bold",border:"red solid 1px",borderWidth:"0px 0px 4px",display:"inline-block",fontSize:d.fontSize,padding:d.padding},h=d.bad;0===e.length&&(e=a("<span></span>"),e.addClass("strength-meter").appendTo(c)),b?e.show():e.hide(),1===f?h=d.weak:2===f?(g.background="lightyellow",g.borderColor="yellow",g.color="goldenrod",h=d.good):f>=3&&(g.background="lightgreen",g.borderColor="darkgreen",g.color="darkgreen",h=d.strong),e.css(g).text(h)})}});var f=function(b,c,d,e,f){var...

    e: IOException?,
  ) {
    var noNewExchangesEvent = false
    withLock {
      if (e is StreamResetException) {
        when {
          e.errorCode == ErrorCode.REFUSED_STREAM -> {
            // Stop using this connection on the 2nd REFUSED_STREAM error.
            refusedStreamCount++
            if (refusedStreamCount > 1) {
              noNewExchangesEvent = !noNewExchanges
              noNewExchanges = true

You can see it directly at: <a href="http://127.0.0.1:8000/openapi.json" class="external-link" target="_blank">http://127.0.0.1:8000/openapi.json</a>.

It will show a JSON starting with something like:

```JSON
{
    "openapi": "3.1.0",
    "info": {
        "title": "FastAPI",
        "version": "0.1.0"
    },
    "paths": {
        "/items/": {

	}
	return versions, hdrVer, metaVer, buf, nil
}

// decodeVersions will decode a number of versions from a buffer
// and perform a callback for each version in order, newest first.
// Return errDoneForNow to stop processing and return nil.
// Any non-nil error is returned.
func decodeVersions(buf []byte, versions int, fn func(idx int, hdr, meta []byte) error) (err error) {
	var tHdr, tMeta []byte // Zero copy bytes