added `run_when_iterator_completes`

satella/coding/generators.py

@@ -67,7 +67,7 @@ class RunActionAfterGeneratorCompletes(tp.Generator, metaclass=ABCMeta):
         """This will run when this generator completes. Override it."""
 
 
-def run_when_generator_completes(gen: tp.Generator, call_on_done: tp.Callable[[...], None],
+def run_when_generator_completes(gen: tp.Generator, call_on_done: tp.Callable,
                                  *args, **kwargs) -> RunActionAfterGeneratorCompletes:
     """
     Return the generator with call_on_done to be called on when it finishes

satella/coding/iterators.py

@@ -138,7 +138,7 @@ class hint_with_length:
             return self.length
 
 
-def run_when_iterator_completes(iterator, func_to_run, *args, **kwargs):
+def run_when_iterator_completes(iterator: tp.Iterator, func_to_run: tp.Callable, *args, **kwargs):
     """
     Schedule a function to be called when an iterator completes.