diff --git a/backend/scheduler.py b/backend/scheduler.py
index 6973800..d775f4d 100644
--- a/backend/scheduler.py
+++ b/backend/scheduler.py
@@ -197,15 +197,17 @@ class LotteryScheduler:
                         open_red = [last_draw.red_ball_1, last_draw.red_ball_2, last_draw.red_ball_3,
                                     last_draw.red_ball_4, last_draw.red_ball_5, last_draw.red_ball_6]
                         open_blue = [last_draw.blue_ball]
-                        open_code_str = f"{' '.join(f'{n:02d}' for n in open_red)} | {
-                            ' '.join(f'{n:02d}' for n in open_blue)}"
+                        red_str = ' '.join(f"{n:02d}" for n in open_red)
+                        blue_str = ' '.join(f"{n:02d}" for n in open_blue)
+                        open_code_str = f"{red_str} | {blue_str}"
                     else:
                         open_red = [last_draw.front_ball_1, last_draw.front_ball_2,
                                     last_draw.front_ball_3, last_draw.front_ball_4, last_draw.front_ball_5]
                         open_blue = [last_draw.back_ball_1,
                                      last_draw.back_ball_2]
-                        open_code_str = f"{' '.join(f'{n:02d}' for n in open_red)} | {
-                            ' '.join(f'{n:02d}' for n in open_blue)}"
+                        red_str = ' '.join(f"{n:02d}" for n in open_red)
+                        blue_str = ' '.join(f"{n:02d}" for n in open_blue)
+                        open_code_str = f"{red_str} | {blue_str}"
                 # 固定号码开奖比对
                 fixed_result = None
                 if last_draw: