Create app.py

app.py

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+import streamlit as st
+import pandas as pd
+import numpy as np
+import yfinance as yf
+import matplotlib.pyplot as plt
+
+# Function to fetch data
+def fetch_data(ticker, start_date, end_date):
+    data = yf.download(ticker, start=start_date, end=end_date)
+    return data
+
+# Function to calculate support and resistance
+def calculate_support_resistance(data):
+    data['Support'] = data['Low'].rolling(window=20, min_periods=1).min()
+    data['Resistance'] = data['High'].rolling(window=20, min_periods=1).max()
+    return data
+
+# Function to plot data
+def plot_data(data):
+    plt.figure(figsize=(10, 5))
+    plt.plot(data['Close'], label='Close Price', color='blue')
+    plt.plot(data['Support'], label='Support', linestyle='--', color='green')
+    plt.plot(data['Resistance'], label='Resistance', linestyle='--', color='red')
+    plt.title('Range Trading Strategy Visualization')
+    plt.xlabel('Date')
+    plt.ylabel('Price')
+    plt.legend()
+    plt.grid(True)
+    st.pyplot(plt)
+
+# Sidebar
+st.sidebar.header('User Input Parameters')
+ticker = st.sidebar.text_input('Ticker Symbol', value='AAPL')
+start_date = st.sidebar.date_input('Start Date', pd.to_datetime('2020-01-01'))
+end_date = st.sidebar.date_input('End Date', pd.to_datetime('today'))
+
+if st.sidebar.button('Analyze'):
+    data = fetch_data(ticker, start_date, end_date)
+    if not data.empty:
+        data = calculate_support_resistance(data)
+        plot_data(data)
+    else:
+        st.error("No data found for the given ticker and date range. Please adjust your inputs and try again.")
+
+# Main screen
+st.title('Range Trading Strategy Visualizer')
+st.markdown("""
+This app retrieves stock data from Yahoo Finance and visualizes the range trading strategy by identifying and plotting support and resistance levels.
+To use this app:
+- Enter the stock ticker symbol in the sidebar.
+- Choose the start and end date for your analysis.
+- Click on the 'Analyze' button to display the stock chart with marked support and resistance levels.
+""")