Update backtesting.py

Author: Alex-CodeLab

backtesting/backtesting.py

@@ -705,8 +705,8 @@ def new_order(self,
 
         if is_long:
             if not (sl or -np.inf) <= (limit or stop or self.last_price) <= (tp or np.inf):
-                raise ValueError(f"Long orders require:' f
-                                 "SL ({sl}) < LIMIT ({limit or stop or self.last_price}) < TP ({tp})")
+                raise ValueError(f"Long orders require:' 
+                                 f"SL ({sl}) < LIMIT ({limit or stop or self.last_price}) < TP ({tp})")
         else:
             if not (tp or -np.inf) <= (limit or stop or self.last_price) <= (sl or np.inf):
                 raise ValueError(f"Short orders require: "