feat(mathy_pydoc): fix formatting of str defaults

Author: justindujardin

libraries/mathy_pydoc/mathy_pydoc/loader.py

@@ -189,8 +189,10 @@ def get_callable_placeholder(
         if p.annotation is not inspect._empty:  # type: ignore
             annotation = inspect.formatannotation(p.annotation)
         if p.default is not inspect._empty:  # type: ignore
-            default_value = str(p.default)
-
+            if isinstance(p.default, str):
+                default_value = repr(p.default)
+            else:
+                default_value = str(p.default)
         if annotation is not None:
             annotation = cleanup_type(annotation)
         params.append(CallableArg(p.name, annotation, default_value))

libraries/mathy_pydoc/testmodule/__init__.py

@@ -6,6 +6,7 @@ def a_function_with_types(
     nested_optional: Optional[Tuple[Optional[str], Optional[int]]],
     inputs: List[Dict[str, Any]],
     auxiliary: Tuple[Optional[str]],
+    another: str = "\t",
     final: int = 3,
 ) -> List[Optional[str]]:
     """Sweet typed function"""