diff --git a/akshare/futures/futures_index_ccidx.py b/akshare/futures/futures_index_ccidx.py
index 873fc38d193..4a4dc8f0773 100644
--- a/akshare/futures/futures_index_ccidx.py
+++ b/akshare/futures/futures_index_ccidx.py
@@ -5,6 +5,7 @@
 Desc: 中证商品指数
 http://www.ccidx.com/
 """
+
 from io import BytesIO
 
 import pandas as pd
@@ -51,7 +52,7 @@ def futures_index_ccidx(symbol: str = "中证商品期货指数") -> pd.DataFram
     temp_df["结算"] = pd.to_numeric(temp_df["结算"], errors="coerce")
     temp_df["涨跌"] = pd.to_numeric(temp_df["涨跌"], errors="coerce")
     temp_df["涨跌幅"] = pd.to_numeric(temp_df["涨跌幅"], errors="coerce")
-    temp_df.sort_values(by=['日期'], inplace=True)
+    temp_df.sort_values(by=["日期"], inplace=True)
     temp_df.reset_index(inplace=True, drop=True)
     return temp_df
 
@@ -60,7 +61,8 @@ def futures_index_min_ccidx(symbol: str = "中证监控油脂油料期货指数"
     """
     中证商品指数-商品指数-分时数据
     http://www.ccidx.com/index.html
-    :param symbol: choice of {"中证商品期货指数", "中证商品期货价格指数", "中证监控油脂油料期货指数", "中证监控软商品期货指数",  "中证监控能化期货指数", "中证监控钢铁期货指数"}
+    :param symbol: choice of {"中证商品期货指数", "中证商品期货价格指数", "中证监控油脂油料期货指数", "中证监控软商品期货指数",
+    "中证监控能化期货指数", "中证监控钢铁期货指数"}
     :type symbol: str
     :return: 商品指数-分时数据
     :rtype: pandas.DataFrame
@@ -93,7 +95,8 @@ def futures_index_min_ccidx(symbol: str = "中证监控油脂油料期货指数"
         "Pragma": "no-cache",
         "Proxy-Connection": "keep-alive",
         "Referer": "http://www.ccidx.com/cscidx/quote1",
-        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36",
+        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) "
+        "Chrome/92.0.4515.159 Safari/537.36",
         "X-Requested-With": "XMLHttpRequest",
     }
     r = requests.post(url, params=params, data=payload, headers=headers)
diff --git a/docs/introduction.md b/docs/introduction.md
index 0f1b4ce5fdd..4b2e8883a6c 100644
--- a/docs/introduction.md
+++ b/docs/introduction.md
@@ -6,7 +6,7 @@
 **风险提示**：[AKShare](https://github.com/akfamily/akshare) 开源财经数据接口库所采集的数据皆来自公开的数据源，不涉及任何个人隐私数据和非公开数据。
 同时本项目提供的数据接口及相关数据仅用于学术研究，任何个人、机构及团体使用本项目的数据接口及相关数据请注意商业风险。
 
-1. 本文档更新时间：**2024-12-23**；
+1. 本文档更新时间：**2024-12-24**；
 2. 如有 [AKShare](https://github.com/akfamily/akshare) 库、文档及数据的相关问题，请在 [AKShare Issues](https://github.com/akfamily/akshare/issues) 中提 Issues；
 3. 欢迎关注 **数据科学实战** 微信公众号；<div><img src="https://jfds-1252952517.cos.ap-chengdu.myqcloud.com/akshare/readme/qrcode/ds.png"></div>
 4. **知识星球【数据科学实战】** 2024 全新改版，聚焦于量化投资内容，欢迎加入 **知识星球【数据科学实战】** 高质量社区，里面有丰富的视频课程、问答、文章、书籍及代码等内容：