Update app.py

app.py

@@ -1,7 +1,5 @@
-# app.py
 import pandas as pd
 import yfinance as yf
-import pandas_ta as ta  # جایگزین talib
 import gradio as gr
 import logging
 
@@ -14,8 +12,14 @@ class SimpleTrader:
             df = df[['Open', 'High', 'Low', 'Close', 'Volume']].rename(columns={
                 'Open': 'open', 'High': 'high', 'Low': 'low', 'Close': 'close', 'Volume': 'tick_volume'
             })
-            df['rsi'] = ta.rsi(df['close'], length=14)  # استفاده از pandas-ta
-            df['ma20'] = ta.sma(df['close'], length=20)  # استفاده از pandas-ta
+            # محاسبه RSI به‌صورت دستی
+            delta = df['close'].diff()
+            gain = (delta.where(delta > 0, 0)).rolling(window=14).mean()
+            loss = (-delta.where(delta < 0, 0)).rolling(window=14).mean()
+            rs = gain / loss
+            df['rsi'] = 100 - (100 / (1 + rs))
+            # محاسبه میانگین متحرک
+            df['ma20'] = df['close'].rolling(window=20).mean()
             return df.tail(limit)
         except Exception as e:
             logging.error(f"Error fetching data: {e}")