Daher verwenden wir einen relativen Import mit `..` für die Abhängigkeiten:

```Python hl_lines="3" title="app/routers/items.py"
{!../../docs_src/bigger_applications/app/routers/items.py!}
```

#### Wie relative Importe funktionieren

/// tip | "Tipp"

Wenn Sie genau wissen, wie Importe funktionieren, fahren Sie mit dem nächsten Abschnitt unten fort.

///

Ein einzelner Punkt `.`, wie in:

```Python

	t, err := objectlock.UTCNowNTP()
	if err != nil {
		internalLogIf(ctx, err, logger.WarningKind)
		return ObjectLocked{Bucket: oi.Bucket, Object: oi.Name, VersionID: oi.VersionID}
	}

	// Pass in relative days from current time, to additionally
	// to verify "object-lock-remaining-retention-days" policy if any.
	days := int(math.Ceil(math.Abs(objRetention.RetainUntilDate.Sub(t).Hours()) / 24))

}

// AndCondition represents logical conjunction of clauses
type AndCondition struct {
	Condition []*Condition `parser:"@@ ( \"AND\" @@ )*"`
}

// Condition represents a negation or a condition operand
type Condition struct {
	Operand *ConditionOperand `parser:"  @@"`
	Not     *Condition        `parser:"| \"NOT\" @@"`
}

- artifact missing
- artifact retrieval exception
- md5 checksum doesn't match for local artifact, need to redownload this
- POM doesn't exist for a goal that requires one
- parent POM missing (in both the repository + relative path)
- component not found

Plugins:
- plugin metadata missing
- plugin metadata retrieval problem
- plugin artifact missing
- plugin artifact retrieval problem
- plugin dependency metadata missing

 * for projects that are built, hence available on the file system. One project,
 * called the <dfn>aggregator project</dfn> will list one or more <dfn>modules</dfn>
 * which are relative pointers on the file system to other projects.  This is done using
 * the {@code /project/modules/module} elements of the POM in the aggregator project.

### Choosing between application and network interceptors

Each interceptor chain has relative merits.

**Application interceptors**

 * Don't need to worry about intermediate responses like redirects and retries.
 * Are always invoked once, even if the HTTP response is served from the cache.

            log.trace("Resolving root " + root);
        }
        /*
         * The link entries contain maps of referrals by path representing DFS links.
         * Note that paths are relative to the root like "\" and not "\example.com\root".
         */
        CacheEntry<DfsReferralDataInternal> links = roots.get(root);
        if ( links != null && now > links.expiration ) {

        }

        // So now we have an url of the form file://<path>

        // We want to eliminate any relative path nonsense and lock down the path so we
        // need to fully resolve it before any submodules use the path. This can happen
        // when you are using a custom settings.xml that contains a relative path entry
        // for the local repository setting.

        .comparingValuesUsing(QUANTILE_CORRESPONDENCE)
        .containsExactly(
            0, NEGATIVE_INFINITY,
            1, NaN, // interpolating between NEGATIVE_ and POSITIVE_INFINITY values
            2, POSITIVE_INFINITY,
            8, POSITIVE_INFINITY,
            9, POSITIVE_INFINITY, // interpolating between two POSITIVE_INFINITY values
            10, POSITIVE_INFINITY);

  if [ -r /etc/gentoo-release ] ; then
    JAVA_HOME=`java-config --jre-home`
  fi
fi

if [ -z "$M2_HOME" ] ; then
  ## resolve links - $0 may be a link to maven's home
  PRG="$0"

  # need this for relative symlinks
  while [ -h "$PRG" ] ; do
    ls=`ls -ld "$PRG"`
    link=`expr "$ls" : '.*-> \(.*\)$'`
    if expr "$link" : '/.*' > /dev/null; then
      PRG="$link"
    else
      PRG="`dirname "$PRG"`/$link"
    fi