建立並使用 Vertex AI 提示產生文字

這個範例示範如何建立 Prompt 執行個體、使用組裝的提示生成文字,以及儲存 Prompt 版本。

程式碼範例

Python

在試用這個範例之前,請先按照「使用用戶端程式庫的 Vertex AI 快速入門導覽課程」中的 Python 設定說明操作。詳情請參閱 Vertex AI Python API 參考文件

如要向 Vertex AI 進行驗證,請設定應用程式預設憑證。詳情請參閱「為本機開發環境設定驗證機制」。

import vertexai
from vertexai.preview import prompts
from vertexai.preview.prompts import Prompt

# from vertexai.generative_models import GenerationConfig, SafetySetting # Optional

# Initialize vertexai
vertexai.init(project=PROJECT_ID, location="us-central1")

# Create local Prompt
local_prompt = Prompt(
    prompt_name="movie-critic",
    prompt_data="Compare the movies {movie1} and {movie2}.",
    variables=[
        {"movie1": "The Lion King", "movie2": "Frozen"},
        {"movie1": "Inception", "movie2": "Interstellar"},
    ],
    model_name="gemini-2.0-flash-001",
    system_instruction="You are a movie critic. Answer in a short sentence.",
    # generation_config=GenerationConfig, # Optional,
    # safety_settings=SafetySetting, # Optional,
)

# Generate content using the assembled prompt for each variable set.
for i in range(len(local_prompt.variables)):
    response = local_prompt.generate_content(
        contents=local_prompt.assemble_contents(**local_prompt.variables[i])
    )
    print(response)

# Save a version
prompt1 = prompts.create_version(prompt=local_prompt)

print(prompt1)

# Example response
# Assembled prompt replacing: 1 instances of variable movie1, 1 instances of variable movie2
# Assembled prompt replacing: 1 instances of variable movie1, 1 instances of variable movie2
# Created prompt resource with id 12345678910.....

後續步驟

如要搜尋及篩選其他 Google Cloud 產品的程式碼範例,請參閱Google Cloud 瀏覽器範例