style: format load data and plot modules

Author: cloudQuant

backtrader/plot/plot.py

@@ -614,8 +614,7 @@ def draw_chart(data, df, bk_list, bp_list, sk_list, sp_list):
             #     """)
             # )
             # After improvement, after add_js_funcs in grid, it becomes as follows
-            itemstyle_opts=opts.ItemStyleOpts(
-                color=JsCode("""
+            itemstyle_opts=opts.ItemStyleOpts(color=JsCode("""
                 function(params) {
                     var colorList;
                     if (barData[params.dataIndex][1] > barData[params.dataIndex][0]) {
@@ -625,8 +624,7 @@ def draw_chart(data, df, bk_list, bp_list, sk_list, sp_list):
                     }
                     return colorList;
                 }
-                """)
-            ),
+                """)),
         )
         .set_global_opts(
             xaxis_opts=opts.AxisOpts(
@@ -648,8 +646,7 @@ def draw_chart(data, df, bk_list, bp_list, sk_list, sp_list):
             xaxis_index=2,
             yaxis_index=2,
             label_opts=opts.LabelOpts(is_show=False),
-            itemstyle_opts=opts.ItemStyleOpts(
-                color=JsCode("""
+            itemstyle_opts=opts.ItemStyleOpts(color=JsCode("""
                         function(params) {
                             var colorList;
                             if (params.data >= 0) {
@@ -659,8 +656,7 @@ def draw_chart(data, df, bk_list, bp_list, sk_list, sp_list):
                             }
                             return colorList;
                         }
-                        """)
-            ),
+                        """)),
         )
         .set_global_opts(
             xaxis_opts=opts.AxisOpts(

backtrader/utils/load_data.py

@@ -7,7 +7,6 @@
 from functools import lru_cache
 from pathlib import Path
 
-
 _BASE_COLUMNS = ["open", "high", "low", "close", "volume", "openinterest"]
 _AUGMENT_COLUMNS = ("tick_volume", "real_volume", "spread")