Vertex AI の Gemini API クイックスタート

export GOOGLE_CLOUD_PROJECT=YOUR_PROJECT_ID

from google import genai

client = genai.Client(vertexai=True, project="${GOOGLE_CLOUD_PROJECT}", location="global")

response = client.models.generate_content(
    model="gemini-2.0-flash", contents="Explain how AI works in a few words"
)
print(response.text)
      

curl -X POST \
-H "Authorization: Bearer $(gcloud auth print-access-token)" \
-H "Content-Type: application/json" \
https://aiplatform.googleapis.com/v1/projects/${GOOGLE_CLOUD_PROJECT}/locations/global/publishers/google/models/gemini-2.0-flash-001:generateContent -d \
$'{
  "contents": {
    "role": "user",
    "parts": {
      "text": "Explain how AI works in a few words"
    }
  }
}'
      

from google import genai
from google.genai import types
from PIL import Image
from io import BytesIO
import base64

client = genai.Client(vertexai=True, project="${GOOGLE_CLOUD_PROJECT}", location="global")

contents = ('Hi, can you create an image of the Eiffel tower with fireworks in the background?')

response = client.models.generate_content(
    model="gemini-2.0-flash-preview-image-generation",
    contents=contents,
    config=types.GenerateContentConfig(
      response_modalities=['TEXT', 'IMAGE']
    )
)


for part in response.candidates[0].content.parts:
  if part.text is not None:
    print(part.text)
  elif part.inline_data is not None:
    image = Image.open(BytesIO((part.inline_data.data)))
    image.save('gemini-native-image.png')
    image.show()
      

curl -X POST \
-H "Authorization: Bearer $(gcloud auth print-access-token)" \
-H "Content-Type: application/json" \
https://aiplatform.googleapis.com/v1/projects/${GOOGLE_CLOUD_PROJECT}/locations/global/publishers/google/models/gemini-2.0-flash-preview-image-generation:generateContent -d \
$'{
  "contents": {
    "role": "user",
    "parts": {
      "text": "Can you create an image of the Eiffel tower with fireworks in the background?"
    }
  },
  "generationConfig": {
    "responseModalities":["TEXT","IMAGE"]
  }
}'
      

from google import genai
from google.genai import types


with open("gemini-native-image.png", "rb") as f:
    image = f.read()


client = genai.Client(vertexai=True, project="${GOOGLE_CLOUD_PROJECT}", location="global")


response = client.models.generate_content(
    model="gemini-flash-2.0",
    contents=[
        Part.from_bytes(data=image, mime_type="image/png"),
        "Write a short and engaging blog post based on this picture.",
    ],
)

print(response.text)
'''
Okay, here's a short and engaging blog post inspired by the image:

**Paris Aglow: A Night to Remember!**

WOW! Just look at this image. Fireworks exploding over Paris, the Eiffel Tower brilliantly lit – can you imagine a more magical sight? This is Paris at its most dazzling, a city transformed into a canvas of light and color.

The Eiffel Tower, the iconic symbol of Paris, stands proud amidst the spectacle.  It's illuminated in blue, adding to the magical atmosphere of the celebrations.

Whether it's a special occasion, a national holiday, or just a spontaneous celebration of life, Paris knows how to put on a show. This image is a reminder of the city's enduring beauty and its power to inspire awe. Have you ever witnessed the magic of Paris? Let me know in the comments!
'''
      

from google import genai
from google.genai import types

client = genai.Client(vertexai=True, project="${GOOGLE_CLOUD_PROJECT}", location="global")

response = client.models.generate_content(
  model="gemini-2.0-flash",
  contents="What is the sum of the first 50 prime numbers? "
  "Generate and run code for the calculation, and make sure you get all 50.",
  config=types.GenerateContentConfig(
      tools=[types.Tool(code_execution=types.ToolCodeExecution)]
  ),
)

for part in response.candidates[0].content.parts:
  if part.text is not None:
      print(part.text)
  if part.executable_code is not None:
      print(part.executable_code.code)
  if part.code_execution_result is not None:
      print(part.code_execution_result.output)
      

curl -X POST \
-H "Authorization: Bearer $(gcloud auth print-access-token)" \
-H "Content-Type: application/json" \
https://us-central1-aiplatform.googleapis.com/v1/projects/${GOOGLE_CLOUD_PROJECT}/locations/us-central1/publishers/google/models/gemini-2.0-flash-001:generateContent -d \
$'{
  "tools": [{'codeExecution': {}}],
  "contents": {
    "role": "user",
    "parts": {
      "text": "What is the sum of the first 50 prime numbers? Generate and run code for the calculation, and make sure you get all 50."
    }
  },
}'