Update utils.py

utils.py

@@ -49,7 +49,17 @@ def smc_structure_backtest(data, filename, swing_hl, **kwargs):
 
 def run_strategy(ticker_symbol, strategy, period, interval, kwargs):
     # Fetching ohlc of random ticker_symbol.
-    data = fetch(ticker_symbol, period, interval)
+    retries = 3
+    for i in range(retries):
+        try:
+            data = fetch(ticker_symbol, period, interval)
+        except:
+            raise Exception(f"{ticker_symbol} data fetch failed")
+
+        if len(data) == 0:
+            raise Exception(f"{ticker_symbol} ohlc is empty")
+        else:
+            break
 
     filename = f'{ticker_symbol}.html'