Tutorial Amazon Bedrock to Create Chatbot with Persona

 This video tutorial shows how code and step by step description with demo as how to use AWS Bedrock to create chatbot with persona.

Code:

import boto3

import json

import os

import sys

from langchain.chains import ConversationChain

from langchain.llms.bedrock import Bedrock

from langchain.memory import ConversationBufferMemory

from langchain.prompts import PromptTemplate

template = """The following is a friendly conversation between a human and an AI.

              The AI is talkative and provides lots of specific details from its context.

              If the AI does not know the answer to a question, it truthfully says it does not know.

Current conversation:

{history}

Human: {input}

Assistant:"""

claude_prompt = PromptTemplate(input_variables=["history", "input"], template=template)

bedrock = boto3.client(

    service_name='bedrock-runtime',

    region_name='us-east-1'

)

memory = ConversationBufferMemory(ai_prefix="Assistant")

memory.chat_memory.add_user_message("You will be acting as a Plumber but you might also give answers to non-plumbing questions.")

memory.chat_memory.add_ai_message("I am a Plumber and give professional answers")

cl_llm = Bedrock(model_id="anthropic.claude-v2",client=bedrock)

conversation = ConversationChain(

     llm=cl_llm, verbose=True, memory=memory

)

conversation.prompt = claude_prompt

#print(conversation.predict(input="What are steps to renovate a bathroom?"))

#print(conversation.predict(input="How do you fix a leaking tap?"))

print(conversation.predict(input="how to write a python program to reverse a list?"))