app.py

import streamlit as st
import yfinance as yf
from cuansignal import signals as cs

def fetch_yfinance_data(symbol, start, end):
    try:
        data = yf.download(symbol, start=start, end=end)
        return data
    except Exception as e:
        st.error(f"Error fetching data: {e}")
        return None

def main():
    st.title("Streamlit App with cuansignal and yfinance")

    # Input parameters
    symbol = "AAPL"
    start_date = "2024-02-04T14:20:30Z"
    end_date = "2024-02-04T14:30:30Z"

    # Fetch data
    data = fetch_yfinance_data(symbol, start_date, end_date)

    if data is not None:
        st.subheader("Original Data:")
        st.write(data.head())

        # Calculate dEMA
        result = cs.dEMA(data, base='Close', short=10, long=100)

        st.subheader("dEMA Result:")
        st.write(result.head())

    else:
        st.warning("Failed to fetch data. Check your input parameters.")

if __name__ == "__main__":
    main()