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app2.py
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import yfinance as yf
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import pandas as pd
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import plotly.graph_objects as go
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import streamlit as st
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# Sidebar inputs for stock symbol
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sidebar = st.sidebar
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symbol = sidebar.text_input("Enter stock symbol:", "AAPL")
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data = yf.download(symbol, start="2020-01-01", end="2021-01-01")
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# Check if data is empty
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if data.empty:
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st.error("No data available for the selected symbol. Please try another symbol.")
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else:
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# Determine the valid date range for Fibonacci analysis
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min_date, max_date = data.index.min().date(), data.index.max().date()
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# Dynamic default dates based on data range
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default_start, default_end = min_date, max_date
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# Sidebar inputs for Fibonacci time frame
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fib_start_date = sidebar.date_input("Fibonacci Start Date", value=default_start, min_value=min_date, max_value=max_date)
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fib_end_date = sidebar.date_input("Fibonacci End Date", value=default_end, min_value=min_date, max_value=max_date)
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if fib_start_date >= fib_end_date:
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st.error("Error: The start date must be before the end date.")
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else:
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# Filter data for Fibonacci analysis
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fib_data = data.loc[fib_start_date:fib_end_date]
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# Calculate high and low prices for Fibonacci levels
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high_price = fib_data['High'].max()
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low_price = fib_data['Low'].min()
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# Fibonacci retracement levels
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fib_levels = [0, 0.236, 0.382, 0.5, 0.618, 0.786, 1]
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price_diff = high_price - low_price
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# Initialize figure for plotting
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fig = go.Figure()
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# Plot close prices and moving averages
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fig.add_trace(go.Scatter(x=data.index, y=data['Close'], name='Close Price', line=dict(color='black')))
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for ma in [20, 50, 200]:
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ma_label = f"MA{ma}"
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data[ma_label] = data['Close'].rolling(window=ma).mean()
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fig.add_trace(go.Scatter(x=data.index, y=data[ma_label], name=ma_label, line=dict(width=2)))
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# Plot Fibonacci levels
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for level in fib_levels:
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value = high_price - (price_diff * level)
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fig.add_hline(y=value, line_dash="dot", annotation_text=f"{level*100}%", annotation_position="right")
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# Display chart
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st.plotly_chart(fig)
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