Simplify comparison depth

freqtrade/optimize/lookahead_analysis.py

@@ -43,7 +43,7 @@ class LookaheadAnalysis:
 
     def __init__(self, config: Dict[str, Any], strategy_obj: Dict):
         self.failed_bias_check = True
-        self.full_varHolder = VarHolder
+        self.full_varHolder = VarHolder()
 
         self.entry_varHolders: List[VarHolder] = []
         self.exit_varHolders: List[VarHolder] = []
@@ -90,7 +90,7 @@ class LookaheadAnalysis:
         return False
 
     # analyzes two data frames with processed indicators and shows differences between them.
-    def analyze_indicators(self, full_vars: VarHolder, cut_vars: VarHolder, current_pair):
+    def analyze_indicators(self, full_vars: VarHolder, cut_vars: VarHolder, current_pair: str):
         # extract dataframes
         cut_df: DataFrame = cut_vars.indicators[current_pair]
         full_df: DataFrame = full_vars.indicators[current_pair]
@@ -103,9 +103,10 @@ class LookaheadAnalysis:
             (cut_df.date == cut_vars.compared_dt)
         ].reset_index(drop=True)
 
+        # check if dataframes are not empty
+        if full_df_cut.shape[0] != 0 and cut_df_cut.shape[0] != 0:
+
             # compare dataframes
-        if full_df_cut.shape[0] != 0:
-            if cut_df_cut.shape[0] != 0:
             compare_df = full_df_cut.compare(cut_df_cut)
 
             if compare_df.shape[0] > 0: