Nehmen wir an, Sie haben eine benutzerdefinierte Exception `UnicornException`, die Sie (oder eine Bibliothek, die Sie verwenden) `raise`n könnten.

Und Sie möchten diese Exception global mit FastAPI handhaben.

Sie könnten einen benutzerdefinierten Exceptionhandler mittels `@app.exception_handler()` hinzufügen:

{* ../../docs_src/handling_errors/tutorial003.py hl[5:7,13:18,24] *}

import org.codelibs.fess.opensearch.log.cbean.cq.bs.BsClickLogCQ;
import org.opensearch.search.aggregations.bucket.filter.FilterAggregationBuilder;
import org.opensearch.search.aggregations.bucket.global.GlobalAggregationBuilder;
import org.opensearch.search.aggregations.bucket.histogram.DateHistogramAggregationBuilder;
import org.opensearch.search.aggregations.bucket.histogram.HistogramAggregationBuilder;

import org.codelibs.fess.opensearch.config.cbean.cq.bs.BsFailureUrlCQ;
import org.opensearch.search.aggregations.bucket.filter.FilterAggregationBuilder;
import org.opensearch.search.aggregations.bucket.global.GlobalAggregationBuilder;
import org.opensearch.search.aggregations.bucket.histogram.HistogramAggregationBuilder;
import org.opensearch.search.aggregations.bucket.missing.MissingAggregationBuilder;

Digamos que você tenha uma exceção customizada `UnicornException` que você (ou uma biblioteca que você use) precise lançar (`raise`).

Nesse cenário, se você precisa manipular essa exceção de modo global com o FastAPI, você pode adicionar um manipulador de exceção customizada com `@app.exception_handler()`.

{* ../../docs_src/handling_errors/tutorial003.py hl[5:7,13:18,24] *}

import org.codelibs.fess.opensearch.config.cbean.cq.bs.BsBadWordCQ;
import org.opensearch.search.aggregations.bucket.filter.FilterAggregationBuilder;
import org.opensearch.search.aggregations.bucket.global.GlobalAggregationBuilder;
import org.opensearch.search.aggregations.bucket.histogram.HistogramAggregationBuilder;
import org.opensearch.search.aggregations.bucket.missing.MissingAggregationBuilder;

import org.codelibs.fess.opensearch.config.cbean.cq.bs.BsThumbnailQueueCQ;
import org.opensearch.search.aggregations.bucket.filter.FilterAggregationBuilder;
import org.opensearch.search.aggregations.bucket.global.GlobalAggregationBuilder;
import org.opensearch.search.aggregations.bucket.histogram.HistogramAggregationBuilder;
import org.opensearch.search.aggregations.bucket.missing.MissingAggregationBuilder;

		t.Errorf("should returns missing WHERE clause while deleting error")
	}

	if err := DB.Session(&gorm.Session{AllowGlobalUpdate: true}).Delete(&User{}).Error; err != nil {
		t.Errorf("should returns no error while enable global update, but got err %v", err)
	}
}

func TestDeleteWithAssociations(t *testing.T) {

import org.codelibs.fess.opensearch.config.cbean.cq.bs.BsWebAuthenticationCQ;
import org.opensearch.search.aggregations.bucket.filter.FilterAggregationBuilder;
import org.opensearch.search.aggregations.bucket.global.GlobalAggregationBuilder;
import org.opensearch.search.aggregations.bucket.histogram.HistogramAggregationBuilder;
import org.opensearch.search.aggregations.bucket.missing.MissingAggregationBuilder;

                    uhe.printStackTrace(log);
                }
            }
        }
        return def;
    }

    /**
     * Get the local host address configured for the client.
     *
     * @return the configured local InetAddress, or null if not configured
     */
    public static InetAddress getLocalHost() {
        final String addr = prp.getProperty("jcifs.smb1.smb.client.laddr");

This setting is fixed at program startup time, and can't be modified
by changing the `GODEBUG` environment variable after the program starts.

Go 1.24 changed the global [`math/rand.Seed`](/pkg/math/rand/#Seed) to be a
no-op. This behavior is controlled by the `randseednop` setting.
For Go 1.24 it defaults to `randseednop=1`.
Using `randseednop=0` reverts to the pre-Go 1.24 behavior.