Using the OpenAI Client

import openai

openai.api_base = "https://api.llama-api.com"

openai.api_key = "LL-2vE"  # supply your API key however you choose

functions = [
        {'name': 'information_extraction', 
         'description': 'Extracts the relevant information from the passage.', 
         'parameters': {
             'type': 'object', 
             'properties': {
                 'sentiment': {'title': 'sentiment', 'type': 'string', 'description': 'the sentiment encountered in the passage'}, 
                 'aggressiveness': {'title': 'aggressiveness', 'type': 'integer', 'description': 'a 0-10 score of how aggressive the passage is'}, 
                 'language': {'title': 'language', 'type': 'string', 'description': 'the language of the passage'},
             }, 'required': []
         }
        }
    ]

completion = openai.ChatCompletion.create(model="llama-13b-chat", 
                                          messages=[{"role": "user", "content": "Extract the desired information from the following passage.:\n\nI love you, but not so much!"}], 
                                          functions=functions,
                                          function_call = {"name": "information_extraction"}
                                          )

print(completion)