app.py

import streamlit as st
from datasets import load_dataset, concatenate_datasets
import json
import os
import base64

def load_and_combine_datasets():
    python_codes_dataset = load_dataset('flytech/python-codes-25k', split='train')
    streamlit_issues_dataset = load_dataset("andfanilo/streamlit-issues", split='train')
    streamlit_docs_dataset = load_dataset("sai-lohith/streamlit_docs", split='train')
    
    combined_dataset = concatenate_datasets([python_codes_dataset, streamlit_issues_dataset, streamlit_docs_dataset])
    
    return combined_dataset

def save_combined_dataset_as_jsonl(combined_dataset, file_path):
    with open(file_path, 'w', encoding='utf-8') as f:
        for example in combined_dataset:
            json.dump(example, f, ensure_ascii=False)
            f.write('\n')

def main():
    st.title("Combined Dataset Viewer and Downloader")

    # Load and combine datasets
    combined_dataset = load_and_combine_datasets()

    # Display a subset of the combined dataset
    st.write("Subset of Combined Dataset:", combined_dataset[:10])

    # Take input for output dataset name
    output_dataset_name = st.text_input("Enter output dataset name (without extension):", "combined_dataset")

    # Add option to save the combined dataset as JSONL
    if st.button("Save Combined Dataset (JSONL)"):
        file_path = os.path.join(os.getcwd(), f"{output_dataset_name}.jsonl")
        save_combined_dataset_as_jsonl(combined_dataset, file_path)
        st.write(f"Combined dataset saved as JSONL file: {file_path}")

    # Add option to download the JSONL file
    if st.button("Download Combined Dataset (JSONL)"):
        file_path = os.path.join(os.getcwd(), f"{output_dataset_name}.jsonl")
        save_combined_dataset_as_jsonl(combined_dataset, file_path)
        st.write("Download the combined dataset as JSONL file:")
        with open(file_path, "r") as f:
            bytes_data = f.read().encode()
        b64 = base64.b64encode(bytes_data).decode()
        href = f'<a href="data:file/jsonl;base64,{b64}" download="{output_dataset_name}.jsonl">Download JSONL File</a>'
        st.markdown(href, unsafe_allow_html=True)
        
        # Provide download button
        st.download_button(label="Click to Download",
                           data=bytes_data,
                           file_name=f"{output_dataset_name}.jsonl",
                           mime="application/jsonl")

if __name__ == "__main__":
    main()