Update app.py

app.py

@@ -6,6 +6,10 @@ from datetime import datetime
 import sqlite3
 from datetime import datetime
 
+# Initialize variables
+db_path = 'nifty50_stock_data.db'  # Database path
+nifty_50_symbols = pd.read_csv("nifty50-stock-tickers.csv").Symbol.to_list()  # NIFTY 50 stock symbols
+
 class Stock:
     def __init__(self, symbol, db_path, start_date, end_date):
         self.symbol = symbol
@@ -45,9 +49,6 @@ class Stock:
         start_loc = max(0, end_loc - 30)
         return self.prices.iloc[start_loc:end_loc]['Close'].values
 
-
-
-
 # Function to calculate monthly and daily percentage change
 def calculate_percentage_changes(stocks):
     monthly_pct_change = pd.DataFrame()