perf: python get_object_value_from_key_list (10%) (ccxt#27779)

perf: python get_object_value_from_key_list 10%-15%

Author: ttodua

python/ccxt/base/exchange.py

@@ -913,15 +913,19 @@ def safe_value_n(dictionary, key_list, default_value=None):
 
     @staticmethod
     def get_object_value_from_key_list(dictionary_or_list, key_list):
-        isDataArray = isinstance(dictionary_or_list, list)
-        isDataDict = isinstance(dictionary_or_list, dict)
-        for key in key_list:
-            if isDataDict:
-                if key in dictionary_or_list and dictionary_or_list[key] is not None and dictionary_or_list[key] != '':
-                    return dictionary_or_list[key]
-            elif isDataArray and not isinstance(key, str):
-                if (key < len(dictionary_or_list)) and (dictionary_or_list[key] is not None) and (dictionary_or_list[key] != ''):
-                    return dictionary_or_list[key]
+        if isinstance(dictionary_or_list, dict):
+            get = dictionary_or_list.get
+            for key in key_list:
+                value = get(key)
+                if value is not None and value != '':
+                    return value
+        elif isinstance(dictionary_or_list, list):
+            length = len(dictionary_or_list)
+            for key in key_list:
+                if isinstance(key, int) and 0 <= key < length:
+                    value = dictionary_or_list[key]
+                    if value is not None and value != '':
+                        return value
         return None
 
     @staticmethod