app.py

import streamlit as st
import pandas as pd

# Title of the app
st.title('Text Annotation App')

# Define labels
labels = ['Label 1', 'Label 2', 'Label 3']

# Input text
user_input = st.text_area("Enter some sentences (one sentence per line)")

# Split the user input into sentences
sentences = user_input.split('\n')

# Placeholder for annotations
annotations = []

# Iterate over sentences
for i, sentence in enumerate(sentences):
    if sentence:  # if the sentence is not empty
        # Select label
        label = st.selectbox(f'Choose a label for the following sentence: "{sentence}"', labels, key=i)
        
        # Save annotation
        annotations.append({'Sentence': sentence, 'Label': label})

# Save annotations to a CSV file
if st.button('Save Annotations'):
    df = pd.DataFrame(annotations)
    df.to_csv('annotations.csv', index=False)
    st.write('Annotations saved.')