app.py

from datasets import load_dataset
import streamlit as st


@st.cache(allow_output_mutation=True)
def load_all_usernames():
    list_of_usernames = load_dataset("bigcode/the-stack-usernames", split="train")["usernames"]
    return set(list_of_usernames)

st.title("Am I in The Stack?")
st.markdown("This tool lets you check if a repository under a given username is part of [The Stack dataset](https://huggingface.co/datasets/bigcode/the-stack).")
usernames = load_all_usernames()

username = st.text_input("GitHub Username:")

if st.button("Check!"):
    if username in usernames:
        st.markdown("**Yes**, your data is in The Stack.")
    else:
        st.markdown("**No**, your data is not in The Stack.")