Added docstrings

Author: GlassOfWhiskey

schema_salad/python_codegen.py

@@ -152,8 +152,10 @@ def prologue(self) -> None:
     from typing_extensions import Self
 """)
 
-        for parent in self.parents_map.values():
-            self.out.write(f"import {parent}\n")
+        if self.parents_map:
+            self.out.write("\n")
+            for parent in self.parents_map.values():
+                self.out.write(f"import {parent}\n")
 
         python_codegen_support: Final = (
             files("schema_salad").joinpath("python_codegen_support.py").read_text("UTF-8")
@@ -625,9 +627,9 @@ def declare_field(
                 """
 {spc}            vocab = _vocab | loadingOptions.vocab
 {spc}            if {safename} not in (cls.__name__, vocab.get(cls.__name__)):
-{spc}               raise ValidationException(f"tried `{{cls.__name__}}` but")
+{spc}                raise ValidationException(f"tried `{{cls.__name__}}` but")
 {spc}        except ValidationException as e:
-{spc}               raise e
+{spc}            raise e
 """.format(
                     safename=self.safe_name(name),
                     spc=spc,

schema_salad/runtime.py

@@ -1,7 +1,8 @@
 """
 Shared code for parsers generated by the Python codegen.
 
-See :option:`--codegen=python` & :py:mod:`python_codegen`."""
+See :option:`--codegen=python` & :py:mod:`python_codegen`.
+"""
 
 from __future__ import annotations
 
@@ -35,6 +36,8 @@
 
 
 class LoadingOptions:
+    """Class that holds the state of loading a SALAD document."""
+
     idx: Final[IdxType]
     fileuri: Final[str | None]
     baseuri: Final[str]
@@ -280,6 +283,7 @@ def save(
     base_url: str = "",
     relative_uris: bool = True,
 ) -> save_type:
+    """Convert an object to a JSON/YAML friendly dictionary."""
     if isinstance(val, Saveable):
         return val.save(top=top, base_url=base_url, relative_uris=relative_uris)
     if isinstance(val, MutableSequence):