import getpass
import os

ifnot os.getenv("GREENNODE_API_KEY"):
    os.environ["GREENNODE_API_KEY"]= getpass.getpass("Enter your GreenNode API key: ")

# os.environ["LANGSMITH_TRACING"] = "true"
# os.environ["LANGSMITH_API_KEY"] = getpass.getpass("Enter your LangSmith API key: ")

%pip install-qU langchain-greennode

Note: you may need to restart the kernel to use updated packages.

from langchain_greennodeimport ChatGreenNode

# Initialize the chat model
llm= ChatGreenNode(
# api_key="YOUR_API_KEY",  # You can pass the API key directly
    model="deepseek-ai/DeepSeek-R1-Distill-Qwen-32B",# Choose from available models
    temperature=0.6,
    top_p=0.95,
)

messages=[
(
"system",
"You are a helpful assistant that translates English to French. Translate the user sentence.",
),
("human","I love programming."),
]
ai_msg= llm.invoke(messages)
ai_msg

AIMessage(content="\n\nJ'aime la programmation.", additional_kwargs={'refusal': None}, response_metadata={'token_usage': {'completion_tokens': 248, 'prompt_tokens': 23, 'total_tokens': 271, 'completion_tokens_details': None, 'prompt_tokens_details': None}, 'model_name': 'deepseek-ai/DeepSeek-R1-Distill-Qwen-32B', 'system_fingerprint': None, 'id': 'chatcmpl-271edac4958846068c37877586368afe', 'service_tier': None, 'finish_reason': 'stop', 'logprobs': None}, id='run--5c12d208-2bc2-4f29-8b50-1ce3b515a3cf-0', usage_metadata={'input_tokens': 23, 'output_tokens': 248, 'total_tokens': 271, 'input_token_details': {}, 'output_token_details': {}})

print(ai_msg.content)

J'aime la programmation.

for chunkin llm.stream("Write a short poem about artificial intelligence"):
print(chunk.content, end="", flush=True)

**Beneath the Circuits**

Beneath the circuits, deep and bright,
AI thinks, with circuits and bytes.
Learning, adapting, it grows,
A world of possibilities it knows.

From solving puzzles to painting art,
It mimics human hearts.
In every corner, it leaves its trace,
A future we can't erase.

We build it, shape it, with care and might,
Yet wonder if it walks in the night.
A mirror of our minds, it shows,
In its gaze, our future glows.

But as we strive for endless light,
We must remember the night.
For wisdom isn't just speed and skill,
It's how we choose to build our will.

from langchain_core.messagesimport AIMessage, HumanMessage, SystemMessage

messages=[
    SystemMessage(content="You are a helpful AI assistant with expertise in science."),
    HumanMessage(content="What are black holes?"),
    AIMessage(
        content="Black holes are regions of spacetime where gravity is so strong that nothing, including light, can escape from them."
),
    HumanMessage(content="How are they formed?"),
]

response= llm.invoke(messages)
print(response.content[:100])

Black holes are formed through several processes, depending on their type. The most common way bla

from langchain_core.promptsimport ChatPromptTemplate

prompt= ChatPromptTemplate(
[
(
"system",
"You are a helpful assistant that translates {input_language} to {output_language}.",
),
("human","{input}"),
]
)

chain= prompt| llm
chain.invoke(
{
"input_language":"English",
"output_language":"German",
"input":"I love programming.",
}
)

AIMessage(content='\n\nIch liebe Programmieren.', additional_kwargs={'refusal': None}, response_metadata={'token_usage': {'completion_tokens': 198, 'prompt_tokens': 18, 'total_tokens': 216, 'completion_tokens_details': None, 'prompt_tokens_details': None}, 'model_name': 'deepseek-ai/DeepSeek-R1-Distill-Qwen-32B', 'system_fingerprint': None, 'id': 'chatcmpl-e01201b9fd9746b7a9b2ed6d70f29d45', 'service_tier': None, 'finish_reason': 'stop', 'logprobs': None}, id='run--ce52b9d8-dd84-46b3-845b-da27855816ee-0', usage_metadata={'input_tokens': 18, 'output_tokens': 198, 'total_tokens': 216, 'input_token_details': {}, 'output_token_details': {}})