added some changes to generator and added server and test client

src/generator/languages/python.py

@@ -16,6 +16,7 @@ class Field:
     type: str
     description: str | None = None
     imports: set[str] | None = None
+    optional: bool = False
 
 
 @dataclass
@@ -32,6 +33,7 @@ class PythonGenerator(BaseGenerator):
         "number": "float",
         "boolean": "bool",
         "object": "dict",
+        "float": "float",
     }
 
     FORMAT_MAP = {
@@ -176,7 +178,7 @@ class PythonGenerator(BaseGenerator):
             field_type = type_info.type
 
             if field_name not in required:
-                field_type = f"{field_type} | None"
+                field_type = f"{field_type} | None = None"
 
             fields.append(
                 Field(
@@ -184,8 +186,10 @@ class PythonGenerator(BaseGenerator):
                     type=field_type,
                     description=field_schema.get("description"),
                     imports=type_info.imports,
+                    optional=field_name not in required,
                 )
             )
+        fields.sort(key=lambda field: field.optional)
 
         return Model(
             name=name,