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"""
Custom Langchain prompt templates
"""
from langchain.prompts import PromptTemplate
def create_qa_prompt() -> PromptTemplate:
"""
Prompt for retrieval QA chain
"""
template = """\n\nHuman: Use the following pieces of context to answer the question at the end. If answer is not clear, say I DON"T KNOW
{context}
Question: {question}
\n\nAssistant:
Answer:"""
return PromptTemplate(template=template, input_variables=["context", "question"])
def create_agent_prompt() -> PromptTemplate:
"""
Prompt for the agent
"""
prefix = """\n\nHuman: Answer the following questions as best you can. You have access to the following tools:"""
format_instructions = """Use the following format:
Question: the input question you must answer
Thought: you should always think about what to do
Action: the action to take, should be one of [{tool_names}]
Action Input: the input to the action
Observation: the result of the action
... (this Thought/Action/Action Input/Observation can repeat N times)
Thought: Answer is not possible. Let's use other [{tool_names}]
Thought: I now know the final answer
Final Answer: the final answer to the original input question"""
suffix = """Begin!
Question: {input}
\n\nAssistant:
Thought: {agent_scratchpad}
"""
return prefix, format_instructions, suffix
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