How to use Anthropic Python Package

1. Install the package using pip:

bash
pip install anthropic

2. Import the necessary modules and create an Anthropic client instance with your API key:

python
import anthropic

client = anthropic.Anthropic(api_key="your_api_key_here")

You can set the `ANTHROPIC_API_KEY` environment variable instead of passing the key directly[1].

3. Create a message with the desired parameters, such as the model, max tokens, and prompt:

python
message = client.messages.create(
    model="claude-3-5-sonnet-20240620",
    max_tokens=1000,
    messages=[
        {"role": "user", "content": "Hello, Claude"}
    ]
)

4. Print the generated response:

python
print(message.content)

Here's a complete example:

python
import anthropic

client = anthropic.Anthropic()

message = client.messages.create(
    model="claude-3-5-sonnet-20240620",
    max_tokens=1000,
    messages=[
        {"role": "user", "content": "Hello, Claude"}
    ]
)

print(message.content)

This will output Claude's response to the "Hello, Claude" prompt[1].

The Anthropic Python package provides convenient access to the Anthropic API from any Python 3.7+ application. It includes type definitions for all request parameters and response fields, and offers both synchronous and asynchronous clients powered by httpx[2].

For more advanced usage, you can configure custom URLs, proxies, and transports when instantiating the client[2]. The package also supports managing HTTP resources and versioning[2].