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import anthropic

from pydantic import BaseModel

class FunctionDescription(BaseModel):

function_name: str

code: str

explanation: str

client = anthropic.Anthropic()

response = client.messages.parse(

model="claude-sonnet-4-6",

max_tokens=1024,

system="You are a Python coding assistant.",

messages=[

{

"role": "user",

"content": "Write a Python function that adds two numbers.",

}

output_format=FunctionDescription,

)

result = response.parsed_output

print("--- Approach 2: Pydantic + client.messages.parse() ---")

print(f"Function: {result.function_name}")

print(f"\nCode:\n{result.code}")

print(f"\nExplanation: {result.explanation}")