app.py

import streamlit as st
import mplfinance as mpf
import pandas as pd
import pandas_datareader as pdr

# Dow 30 company symbols
dow30_symbols = [
    'MMM', 'AXP', 'AAPL', 'BA', 'CAT', 'CVX', 'CSCO', 'KO', 'DOW', 'GS',
    'HD', 'HON', 'IBM', 'INTC', 'JNJ', 'JPM', 'MCD', 'MRK', 'MSFT', 'NKE',
    'PG', 'CRM', 'TRV', 'UNH', 'VZ', 'V', 'WBA', 'WMT', 'DIS'
]

@st.cache
def get_stock_data(symbol):
    # Retrieve stock data using pandas_datareader
    df = pdr.get_data_yahoo(symbol)
    return df

# Page title
st.title("Dow 30 Candlestick Charts")

# Loop through each Dow 30 company
for symbol in dow30_symbols:
    st.subheader(symbol)

    # Retrieve stock data
    df = get_stock_data(symbol)

    # Create the candlestick plot
    mpf.plot(df, type='candle', style='charles')

    # Optional: Display the dataframe
    st.dataframe(df)

    # Add a horizontal line
    st.markdown("---")