Start fixing type annotations for 3.5

collections_extended/_util.py

@@ -35,7 +35,7 @@ class Sentinel(object):
 	Inspired by https://pypi.org/project/sentinels/
 	"""
 
-	_registry: Dict = {}
+	_registry = {}  # type: Dict[str, Sentinel]
 
 	def __new__(cls, name: str):
 		"""Find the Sentinel object with name or create a new one."""
@@ -48,7 +48,7 @@ def __new__(cls, name: str):
 
 	def __init__(self, name: str):
 		super(Sentinel, self).__init__()
-		self.name: str = name
+		self.name = name  # type: str
 
 	def __repr__(self):
 		return '<%s>' % self.name

collections_extended/bags.py

@@ -102,8 +102,8 @@ def __init__(self, iterable: Iterable[Hashable] = None):
 
 		This runs in O(len(iterable))
 		"""
-		self._dict: Dict[Hashable, int] = dict()
-		self._size: int = 0
+		self._dict = dict()  # type: Dict[Hashable, int]
+		self._size = 0  # type: int
 		if iterable:
 			if isinstance(iterable, _basebag):
 				# iterable: _basebag
@@ -508,7 +508,7 @@ def product(self, other: Iterable[Hashable], operator: Callable = None):
 			other_bag = other
 		else:
 			other_bag = self._from_iterable(other)
-		values: Dict[Hashable, int] = defaultdict(int)
+		values = defaultdict(int)  # type: Dict[Hashable, int]
 		for elem, count in self.counts():
 			for other_elem, other_count in other_bag.counts():
 				if operator:

collections_extended/bijection.py

@@ -18,13 +18,13 @@ def __init__(
 				Iterable[Tuple[Hashable, Hashable]],
 				None,
 				] = None,
-			**kwargs: Hashable,
+			**kwargs: Hashable
 			):
 		"""Create a bijection from an iterable.
 
 		Matches dict.__init__.
 		"""
-		self._data: Dict[Hashable, Hashable] = {}
+		self._data = {}  # type: Dict[Hashable, Hashable]
 		self.__inverse = self.__new__(bijection)
 		self.__inverse._data = {}
 		self.__inverse.__inverse = self

setup.py

@@ -67,7 +67,7 @@ def long_description():
 		],
 	long_description=long_description(),
 	long_description_content_type='text/x-rst',
-	install_requires=['setuptools'],
+	install_requires=['setuptools', 'typing'],
 	tests_require=['pytest'],
 	package_data={'': ['README.rst', 'LICENSE', 'CONTRIBUTING.rst']},
 	cmdclass={'test': PyTest},