third commit

server/backend/pydantic.py

@@ -0,0 +1,11 @@
+from pydantic import BaseModel, Field, field_validator
+class ExcelInfo(BaseModel):
+    arti:str = Field(..., min_length=6, max_length=12, description="arti of the clothes")
+    counts:int = Field(..., ge=0, description="the quantity of the clothes")
+    price:int = Field(..., ge=0, description="the price of the clothes")
+class ExcelRealization(BaseModel):
+    pass
+class ExcelReturning(BaseModel):
+    pass
+class ExcelOut(BaseModel):
+    pass