修改main文件

新增统计api
新增统计请求模型

scheme/statistics_scheme.py

@@ -0,0 +1,22 @@
+# scheme/statistics_scheme.py
+from pydantic import BaseModel, Field, EmailStr
+from datetime import datetime
+from typing import Optional
+
+# ---------- 请求模型 ----------
+# class UserCreate(BaseModel):
+#     username: str = Field(..., min_length=3, max_length=50)
+#     email: EmailStr
+#     full_name: Optional[str] = Field(None, max_length=100)
+#
+# class UserUpdate(BaseModel):
+#     username: Optional[str] = Field(None, min_length=3, max_length=50)
+#     email: Optional[EmailStr] = None
+#     full_name: Optional[str] = Field(None, max_length=100)
+
+# ---------- 响应模型 ----------
+# 多维度班级统计
+class StatsResponse(BaseModel):
+    total_count: int
+    man_count: int
+    female_count: int