fix: Import BaseModel for Pydantic usage

Author: dbrattli

Fable.Literate/App.fs

@@ -77,13 +77,7 @@ Utility functions for naming conversion and line classification:
 
 module Utils =
     /// List of contributors to thank (Fable-style).
-    let contributors = [|
-        "@dbrattli"
-        "@alfonsogarciacaro"
-        "@ncave"
-        "@MangelMaxime"
-        "@claude 🤖"
-    |]
+    let contributors = [| "@dbrattli"; "@alfonsogarciacaro"; "@ncave"; "@MangelMaxime"; "@claude 🤖" |]
 
     /// Returns a random contributor from the list.
     let randomContributor () : string =
@@ -257,7 +251,8 @@ module Parser =
         lines
         |> Seq.fold parseLine initial
         |> flushState
-        |> _.Blocks |> List.rev
+        |> _.Blocks
+        |> List.rev
 
 (**
 ## Transform Module

chapters/Interop.fs

@@ -336,12 +336,21 @@ type DecoratedUser() =
 Control how class members are generated for Python frameworks like Pydantic:
 *)
 
+// BaseModel from Pydantic (import this from Fable.Python.Pydantic in
+// real code to get proper bindings)
+[<Import("BaseModel", "pydantic")>]
+type BaseModel() = class end
+
 [<Py.ClassAttributes(Py.ClassAttributeStyle.Attributes, false)>]
 type PydanticModel() =
+    inherit BaseModel()
     member val Name: string = "" with get, set
     member val Age: int = 0 with get, set
 
-(** This generates class-level type annotations suitable for Pydantic: *)
+(**
+This generates class-level type annotations suitable for Pydantic.
+See the Pydantic chapter for more on working with Pydantic models:
+*)
 
 (*** include-python: PydanticModel ***)
 

chapters/Summary.fs

@@ -16,7 +16,8 @@ We've covered a lot of ground in this guide:
 - **Testing**: Running F# code with pytest and other Python test runners
 - **Fable v5**: The latest features including the Rust core and PyPI packages
 - **Pydantic**: Building validated data models with Python's favorite library
-- **Units of Measure**: Compile-time dimensional analysis that vanishes at runtime
+- **FastAPI**: Building type-safe web APIs in the Python ecosystem
+- **Units of Measure**: Compile-time dimensional analysis that vanishes (erased) at runtime
 - **Fable.Literate**: A self-documenting literate programming converter
 
 ## The Punchline