diff --git a/common/__init__.py b/common/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/common/bet_tools.py b/common/bet_tools.py
index b165275..d013114 100644
--- a/common/bet_tools.py
+++ b/common/bet_tools.py
@@ -55,7 +55,7 @@ def calculate_no_vig_moneyline_power(moneyline_odds_list: list[int]) -> list[int
     # 1. 将 Moneyline 赔率转换为隐含概率 (pi)
     implied_probabilities = [moneyline_to_prob(odds) for odds in moneyline_odds_list]
 
-    # 确保所有隐含概率都大于 0，否则无法进行幂运算或取对数（数值求解时可能涉及）
+    # 确保所有隐含概率都大于 0，否则无法进行幂运算或取对数 (数值求解时可能涉及)
     if any(p <= 0 for p in implied_probabilities):
         raise ValueError("All implied probabilities must be positive.")