Google Generative AI函数调用报错：TypeError参数重复问题求助

错误原因 #

1. contents参数格式错误：generate_content要求contents是对话消息的列表，而非单个字典；同时消息中的parts也必须是列表，不能是单个字典。
2. tools参数结构错误：嵌套的字典结构不符合Gemini Python SDK的要求，导致SDK解析时重复识别tools参数，触发"got multiple values for keyword argument 'tools'"错误。

修正后的代码 #

import google.generativeai as genai

# 修正格式：contents是列表，parts是列表
datas = {
  "contents": [
    {
      "role": "user",
      "parts": [{"text": "Where can I watch Oppenheimer today?"}]
    }
  ],
  # 修正tools结构：直接传入包含function_declarations的字典列表
  "tools": [
    {
      "function_declarations": [
        {
          "name": "find_movies",
          "description": "find movie titles currently playing in theaters based on any description, genre, title words, etc.",
          "parameters": {
            "type": "object",
            "properties": {
              "location": {
                "type": "string",
                "description": "The city and state, e.g. San Francisco, CA or a zip code e.g. 95616"
              },
              "description": {
                "type": "string",
                "description": "Any kind of description including category or genre, title words, attributes, etc."
              }
            },
            "required": ["description"]
          }
        }
      ]
    }
  ]
}

genai.configure(api_key="MY_API_KEY")
model = genai.GenerativeModel('gemini-1.0-pro')
response = model.generate_content(**datas)

# 打印函数调用结果
print(response.candidates[0].content.parts[0].function_call)

更规范的写法（使用SDK工具类） #

为避免格式错误，推荐使用SDK提供的类定义工具：

import google.generativeai as genai
from google.generativeai.types import Tool, FunctionDeclaration

genai.configure(api_key="MY_API_KEY")

# 定义函数声明
find_movies_func = FunctionDeclaration(
    name="find_movies",
    description="find movie titles currently playing in theaters based on any description, genre, title words, etc.",
    parameters={
        "type": "object",
        "properties": {
            "location": {
                "type": "string",
                "description": "The city and state, e.g. San Francisco, CA or a zip code e.g. 95616"
            },
            "description": {
                "type": "string",
                "description": "Any kind of description including category or genre, title words, attributes, etc."
            }
        },
        "required": ["description"]
    }
)

# 定义工具
tool = Tool(function_declarations=[find_movies_func])

# 调用模型
model = genai.GenerativeModel('gemini-1.0-pro')
response = model.generate_content(
    contents=[{"role": "user", "parts": [{"text": "Where can I watch Oppenheimer today?"}]}],
    tools=[tool]
)

print(response.candidates[0].content.parts[0].function_call)

内容的提问来源于stack exchange，提问作者Nohab