Linting serialization module (#350)

* Linting serialization module

Author: anupkalburgi

dbldatagen/serialization.py

@@ -1,20 +1,23 @@
 """ Defines interface contracts."""
 import sys
+from typing import TypeVar
 
 
+T = TypeVar("T", bound="SerializableToDict")
+
 class SerializableToDict:
     """ Serializable objects must implement a `_getConstructorOptions` method
         which converts the object properties to a Python dictionary whose keys
         are the named arguments to the class constructor.
     """
 
     @classmethod
-    def _fromInitializationDict(cls, options):
+    def _fromInitializationDict(cls: type[T], options: dict) -> T:
         """ Converts a Python dictionary to an object using the object's constructor.
             :param options: Python dictionary with class constructor options
             :return: An instance of the class
         """
-        _options = options.copy()
+        _options: dict = options.copy()
         _options.pop("kind")
         _ir = {}
         for key, value in _options.items():
@@ -29,7 +32,7 @@ def _fromInitializationDict(cls, options):
             _ir[key] = value
         return cls(**_ir)
 
-    def _toInitializationDict(self):
+    def _toInitializationDict(self) -> dict:
         """ Converts an object to a Python dictionary. Keys represent the object's
             constructor arguments.
             :return: Python dictionary representation of the object

pyproject.toml

@@ -152,7 +152,6 @@ exclude = [
     "dbldatagen/html_utils.py",
     "dbldatagen/nrange.py",
     "dbldatagen/schema_parser.py",
-    "dbldatagen/serialization.py",
     "dbldatagen/text_generator_plugins.py",
     "dbldatagen/text_generators.py"
 ]