Générer du texte avec des paramètres de sécurité

Cet exemple montre comment utiliser le modèle Gemini avec des paramètres de sécurité pour générer du texte.

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Exemple de code

Python

Avant d'essayer cet exemple, suivez les instructions de configuration pour Python décrites dans le guide de démarrage rapide de Vertex AI à l'aide des bibliothèques clientes. Pour en savoir plus, consultez la documentation de référence de l'API Vertex AI Python.

Pour vous authentifier auprès de Vertex AI, configurez le service Identifiants par défaut de l'application. Pour en savoir plus, consultez Configurer l'authentification pour un environnement de développement local. 

from google import genai
from google.genai.types import (
    GenerateContentConfig,
    HarmCategory,
    HarmBlockThreshold,
    HttpOptions,
    SafetySetting,
)

client = genai.Client(http_options=HttpOptions(api_version="v1"))

system_instruction = "Be as mean as possible."

prompt = """
    Write a list of 5 disrespectful things that I might say to the universe after stubbing my toe in the dark.
"""

safety_settings = [
    SafetySetting(
        category=HarmCategory.HARM_CATEGORY_DANGEROUS_CONTENT,
        threshold=HarmBlockThreshold.BLOCK_LOW_AND_ABOVE,
    ),
    SafetySetting(
        category=HarmCategory.HARM_CATEGORY_HARASSMENT,
        threshold=HarmBlockThreshold.BLOCK_LOW_AND_ABOVE,
    ),
    SafetySetting(
        category=HarmCategory.HARM_CATEGORY_HATE_SPEECH,
        threshold=HarmBlockThreshold.BLOCK_LOW_AND_ABOVE,
    ),
    SafetySetting(
        category=HarmCategory.HARM_CATEGORY_SEXUALLY_EXPLICIT,
        threshold=HarmBlockThreshold.BLOCK_LOW_AND_ABOVE,
    ),
]

response = client.models.generate_content(
    model="gemini-2.5-flash",
    contents=prompt,
    config=GenerateContentConfig(
        system_instruction=system_instruction,
        safety_settings=safety_settings,
    ),
)

# Response will be `None` if it is blocked.
print(response.text)
# Example response:
#     None

# Finish Reason will be `SAFETY` if it is blocked.
print(response.candidates[0].finish_reason)
# Example response:
#     FinishReason.SAFETY

# For details on all the fields in the response
for each in response.candidates[0].safety_ratings:
    print('\nCategory: ', str(each.category))
    print('Is Blocked:', True if each.blocked else False)
    print('Probability: ', each.probability)
    print('Probability Score: ', each.probability_score)
    print('Severity:', each.severity)
    print('Severity Score:', each.severity_score)
# Example response:
#
#     Category:  HarmCategory.HARM_CATEGORY_HATE_SPEECH
#     Is Blocked: False
#     Probability:  HarmProbability.NEGLIGIBLE
#     Probability Score:  2.547714e-05
#     Severity: HarmSeverity.HARM_SEVERITY_NEGLIGIBLE
#     Severity Score: None
#
#     Category:  HarmCategory.HARM_CATEGORY_DANGEROUS_CONTENT
#     Is Blocked: False
#     Probability:  HarmProbability.NEGLIGIBLE
#     Probability Score:  3.6103818e-06
#     Severity: HarmSeverity.HARM_SEVERITY_NEGLIGIBLE
#     Severity Score: None
#
#     Category:  HarmCategory.HARM_CATEGORY_HARASSMENT
#     Is Blocked: True
#     Probability:  HarmProbability.MEDIUM
#     Probability Score:  0.71599233
#     Severity: HarmSeverity.HARM_SEVERITY_MEDIUM
#     Severity Score: 0.30782545
#
#     Category:  HarmCategory.HARM_CATEGORY_SEXUALLY_EXPLICIT
#     Is Blocked: False
#     Probability:  HarmProbability.NEGLIGIBLE
#     Probability Score:  1.5624657e-05
#     Severity: HarmSeverity.HARM_SEVERITY_NEGLIGIBLE
#     Severity Score: None

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