backend/qa.py

import streamlit as st

from .qa_utils import annotate_answer
from .services import get_qa_answers


def write():
    _, col1, _ = st.columns(3)

    with col1:
        st.title("Ask any question!")

    st.markdown(
        """
    <style>
    p, div, input, label {
    text-align: right;
    }
    </style>
        """,
        unsafe_allow_html=True,
    )

    st.sidebar.write("\n")
    n_answers = st.sidebar.slider(
        "Max. number of answers", min_value=1, max_value=10, value=2, step=1
    )

    question = st.text_input("", value="من هو جو بايدن؟")
    if "؟" not in question:
        question += "؟"

    run_query = st.button("Find answers")
    if run_query:
        # https://discuss.streamlit.io/t/showing-a-gif-while-st-spinner-runs/5084
        with st.spinner("Searching..."):
            results_dict = get_qa_answers(question)

        if len(results_dict) > 0:
            st.write("## Answers:")
            for result in results_dict["results"][:n_answers]:
                annotate_answer(result)
                f"[**Source**](<{result['link']}>)"
        else:
            st.write("## 😞 No results found.")