google-generativeai is deprecated (support ended 2025-11-30) — use google-genai: from google import genai

pip uninstall -y google-generativeai && pip install -U google-genai

Before:

import google.generativeai as genai
genai.configure(api_key=KEY)
model = genai.GenerativeModel("gemini-3.8-flash")
r = model.generate_content("Tell me a story", generation_config=genai.GenerationConfig(temperature=0.2))

After:

from google import genai
from google.genai import types
client = genai.Client()   # reads GEMINI_API_KEY
r = client.models.generate_content(model="gemini-3.8-flash", contents="Tell me a story",
        config=types.GenerateContentConfig(temperature=0.2))
print(r.text)

Other renames: model.start_chat() -> client.chats.create(model=...); genai.upload_file(path=) -> client.files.upload(file=); genai.list_files/get_file/delete_file -> client.files.list/get/delete.