fix: Fix Python3.7 tests

Author: fgmacedo

README.md

@@ -16,7 +16,7 @@ Python [finite-state machines](https://en.wikipedia.org/wiki/Finite-state_machin
 
 </div>
 
-Welcome to python-statemachine, an intuitive and powerful state machine framework designed for a
+Welcome to python-statemachine, an intuitive and powerful state machine library designed for a
 great developer experience. We provide an _pythonic_ and expressive API for implementing state
 machines in sync or asynchonous Python codebases.
 

statemachine/dispatcher.py

@@ -2,6 +2,7 @@
 from operator import attrgetter
 from typing import Any
 from typing import Generator
+from typing import Tuple
 
 from .signature import SignatureAdapter
 
@@ -15,7 +16,7 @@ class ObjectConfig(namedtuple("ObjectConfig", "obj skip_attrs resolver_id")):
     """
 
     @classmethod
-    def from_obj(cls, obj, skip_attrs=None):
+    def from_obj(cls, obj, skip_attrs=None) -> "ObjectConfig":
         if isinstance(obj, ObjectConfig):
             return obj
         else:
@@ -84,7 +85,7 @@ async def wrapper(*args, **kwargs):
 
 
 def _search_callable_attr_is_property(
-    attr, configs: tuple[ObjectConfig]
+    attr, configs: Tuple[ObjectConfig, ...]
 ) -> "WrapSearchResult | None":
     # if the attr is a property, we'll try to find the object that has the
     # property on the configs
@@ -96,7 +97,7 @@ def _search_callable_attr_is_property(
     return None
 
 
-def _search_callable_attr_is_callable(attr, configs: tuple[ObjectConfig]) -> WrapSearchResult:
+def _search_callable_attr_is_callable(attr, configs: Tuple[ObjectConfig, ...]) -> WrapSearchResult:
     # if the attr is an unbounded method, we'll try to find the bounded method
     # on the configs
     if not hasattr(attr, "__self__"):
@@ -109,7 +110,7 @@ def _search_callable_attr_is_callable(attr, configs: tuple[ObjectConfig]) -> Wra
 
 
 def _search_callable_in_configs(
-    attr, configs: tuple[ObjectConfig]
+    attr, configs: Tuple[ObjectConfig, ...]
 ) -> Generator[WrapSearchResult, None, None]:
     for obj, skip_attrs, resolver_id in configs:
         if attr in skip_attrs:
@@ -128,7 +129,9 @@ def _search_callable_in_configs(
         yield CallableSearchResult(attr, func, resolver_id)
 
 
-def search_callable(attr, configs: tuple) -> Generator[WrapSearchResult, None, None]:  # noqa: C901
+def search_callable(
+    attr, configs: Tuple[ObjectConfig, ...]
+) -> Generator[WrapSearchResult, None, None]:  # noqa: C901
     if isinstance(attr, property):
         result = _search_callable_attr_is_property(attr, configs)
         if result is not None:
@@ -142,7 +145,7 @@ def search_callable(attr, configs: tuple) -> Generator[WrapSearchResult, None, N
     yield from _search_callable_in_configs(attr, configs)
 
 
-def resolver_factory(objects: tuple[ObjectConfig]):
+def resolver_factory(objects: Tuple[ObjectConfig, ...]):
     """Factory that returns a configured resolver."""
 
     def resolver(attr) -> Generator[WrapSearchResult, None, None]:
@@ -151,6 +154,6 @@ def resolver(attr) -> Generator[WrapSearchResult, None, None]:
     return resolver
 
 
-def resolver_factory_from_objects(*objects: tuple[Any]):
-    configs = tuple(ObjectConfig.from_obj(o) for o in objects)
+def resolver_factory_from_objects(*objects: Tuple[Any, ...]):
+    configs: Tuple[ObjectConfig, ...] = tuple(ObjectConfig.from_obj(o) for o in objects)
     return resolver_factory(configs)

statemachine/statemachine.py

@@ -79,7 +79,7 @@ def __init__(
         self.__processing: bool = False
         self._external_queue: deque = deque()
         self._callbacks_registry = CallbacksRegistry()
-        self._states_for_instance: Dict["State", "State"] = {}
+        self._states_for_instance: Dict[State, State] = {}
         self._observers: Dict[Any, Any] = {}
 
         if self._abstract: