PythonAstREPLTool - How to add few-shot examples?

[mraguth]

https://api.python.langchain.com/en/latest/tools/langchain_experimental.tools.python.tool.PythonAstREPLTool.html

As mentioned in the above reference, how I add 'few shot examples'? can I add a template? or can you give me a sample code for me?

param description: str = 'A Python shell. Use this to execute python commands. Input should be a valid python command. When using this tool, sometimes output is abbreviated - make sure it does not look abbreviated before using it in your answer.'
Used to tell the model how/when/why to use the tool.

You can provide few-shot examples as a part of the description.

[dosubot[bot]]

To add few-shot examples to the PythonAstREPLTool, you can include them directly in the description parameter when initializing the tool. This parameter is used to provide context and guidance on how to use the tool effectively. Here's a sample code snippet demonstrating how to include few-shot examples in the description:

from langchain_experimental.tools.python.tool import PythonAstREPLTool

description = """
A Python shell. Use this to execute python commands. Input should be a valid python command. 
When using this tool, sometimes output is abbreviated - make sure it does not look abbreviated before using it in your answer.

Examples:
1. Input: `print("Hello, World!")` 
   Output: `Hello, World!`
2. Input: `1 + 1`
   Output: `2`
3. Input: `len("LangChain")`
   Output: `9`
"""

tool = PythonAstREPLTool(description=description)

In this example, the description includes a brief explanation of the tool's purpose and a few-shot example list that shows expected inputs and outputs. This helps guide the model on how to interact with the tool effectively. You can customize the examples to suit your specific use case.

To continue talking to Dosu, mention @dosu.

[mraguth]

@dosu.... BadRequestError: Error code: 400 - {'error': {'message': "Invalid 'tools[0].function.description': string too long. Expected a string with maximum length 1024, but got a string with length 1423 instead

Can I mitigate? other than reducing the lenght?

[dosubot[bot]]

To handle the BadRequestError due to the description being too long, you can use text splitters to manage and split the description into smaller, manageable parts. LangChain provides text splitters that can help you split long descriptions into semantically meaningful chunks. Here's a basic example of how you might use a text splitter:

from langchain.text_splitters import RecursiveCharacterTextSplitter

# Your long description
long_description = """
A Python shell. Use this to execute python commands. Input should be a valid python command. 
When using this tool, sometimes output is abbreviated - make sure it does not look abbreviated before using it in your answer.

Examples:
1. Input: `print("Hello, World!")` 
   Output: `Hello, World!`
2. Input: `1 + 1`
   Output: `2`
3. Input: `len("LangChain")`
   Output: `9`
...
"""

# Initialize the text splitter
text_splitter = RecursiveCharacterTextSplitter(
    chunk_size=1024,  # Adjust the chunk size as needed
    chunk_overlap=100  # Optional: overlap to maintain context
)

# Split the long description
chunks = text_splitter.split(long_description)

# Use the first chunk as the description
tool = PythonAstREPLTool(description=chunks[0])

This approach allows you to split the description into parts that fit within the length limit, while still maintaining context between chunks ^[1].

To continue talking to Dosu, mention @dosu.

[mraguth]

@dosu... Thank you so much. I learn something new today :-)

[dosubot[bot]]

You're welcome! I'm glad I could help. If you have any more questions or need further assistance, feel free to ask. Happy coding! 😊

To continue talking to Dosu, mention @dosu.