feat: Update dataframe_operations.py

[Empreiteiro]

Adding the "Convert to Data List" and "Base64" functions to the DataFrame Operations component.

Use Cases:

Convert to Data List: Useful function to transform a dataframe into a datalist, preparing the data to pass through a loop or other component that does not accept dataframes.

Base64: Transforms the dataframe into a string in base64 format, allowing you to share the dataframe in image format within the Playground and/or any other connected application, including Google Drive, Slack, among others.

[Copilot]

Pull Request Overview

This PR adds two new operations to the DataFrame Operations component: "Convert to Data List" and "Base64".

• Introduces operations to convert a DataFrame into a list of data objects and to transform a DataFrame into a base64-encoded image.
• Updates imports to include matplotlib and pandas and adjusts the schema import.

Comments suppressed due to low confidence (2)

src/backend/base/langflow/components/processing/dataframe_operations.py:248

• The io module is used but not imported in this file. Please add an import statement for the io module at the top.

buf = io.BytesIO()

src/backend/base/langflow/components/processing/dataframe_operations.py:252

• The base64 module is used to encode the dataframe image but is not imported. Please add an import statement for the base64 module.

base64_image = base64.b64encode(buf.read()).decode("utf-8")

[edwinjosechittilappilly]

Thank you for the PR!

Just a quick note — we are currently limiting the use of DataList, so I’d recommend removing the toDataList option for now until we identify clearer use cases for it.

Also, the DataFrame operations you’re using align well with the standard DF practices, which is great.

Thanks again!

[Empreiteiro]

@edwinjosechittilappilly I made a new commit removing the Data List transformation function. Thanks!