diff --git a/scripts/data_collector/pit/collector.py b/scripts/data_collector/pit/collector.py
index b594721006..caabbde380 100644
--- a/scripts/data_collector/pit/collector.py
+++ b/scripts/data_collector/pit/collector.py
@@ -88,12 +88,12 @@ def get_instrument_list(self) -> List[str]:
         return symbols
 
     def normalize_symbol(self, symbol: str) -> str:
-        if symbol.startswith('6'):
-            exchange = 'sh'
-        elif symbol.startswith('0') or symbol.startswith('3'):
-            exchange = 'sz'
+        if symbol.startswith("6"):
+            exchange = "sh"
+        elif symbol.startswith("0") or symbol.startswith("3"):
+            exchange = "sz"
         else:
-            exchange = 'bj'
+            exchange = "bj"
         return f"{exchange}{symbol}"
 
     @staticmethod
@@ -205,12 +205,12 @@ def get_data(
     ) -> pd.DataFrame:
         if interval != self.INTERVAL_QUARTERLY:
             raise ValueError(f"cannot support {interval}")
-        if symbol.startswith('6'):
-            exchange = 'sh'
-        elif symbol.startswith('0') or symbol.startswith('3'):
-            exchange = 'sz'
+        if symbol.startswith("6"):
+            exchange = "sh"
+        elif symbol.startswith("0") or symbol.startswith("3"):
+            exchange = "sz"
         else:
-            exchange = 'bj'
+            exchange = "bj"
 
         code = f"{exchange}.{symbol}"
         start_date = start_datetime.strftime("%Y-%m-%d")
diff --git a/scripts/data_collector/utils.py b/scripts/data_collector/utils.py
index b642b4404a..1962281918 100644
--- a/scripts/data_collector/utils.py
+++ b/scripts/data_collector/utils.py
@@ -204,7 +204,10 @@ def _get_symbol():
         if len(_symbols) < 3900:
             raise ValueError("request error")
 
-        _symbols = [_symbol + '.ss' if _symbol.startswith('6') else _symbol + '.sz' if _symbol.startswith(('0', '3')) else None for _symbol in _symbols]
+        _symbols = [
+            _symbol + ".ss" if _symbol.startswith("6") else _symbol + ".sz" if _symbol.startswith(("0", "3")) else None
+            for _symbol in _symbols
+        ]
         _symbols = [_symbol for _symbol in _symbols if _symbol is not None]
 
         return set(_symbols)