clean up and refactor

examples/models.py

@@ -0,0 +1,28 @@
+from pydantic import BaseModel, Field
+from typing import Optional
+
+
+class Alpha(BaseModel):
+    a: int
+
+
+class Color(BaseModel):
+    r: int
+    g: int
+    b: int
+    alpha: Alpha
+
+
+class Hair(BaseModel):
+    color: Color
+    length: int
+
+
+class Person(BaseModel):
+    name: str
+    other_name: Optional[str] = None
+    age: int
+    email: Optional[str]
+    pet: str = "dog"
+    address: str = Field("123 Main St", description="Where the person calls home.")
+    hair: Hair