clearer naming/comments

hypothesis-python/src/hypothesis/stateful.py

@@ -538,6 +538,7 @@ def do_draw(self, data):
         if not bundle:
             data.mark_invalid(f"Cannot draw from empty bundle {self.name!r}")
 
+        # We use both self.bundle and self.elements to make sure an index is used to safely pop
         self.bundle = bundle
         self.elements = range(len(bundle))
 

hypothesis-python/src/hypothesis/strategies/_internal/strategies.py

@@ -556,11 +556,11 @@ def do_draw(self, data):
         return result
 
     def get_element(self, i):
-        reference = self.elements[i]
-        value = self._transform(self.reference_to_value(reference))
+        element = self.elements[i]
+        value = self._transform(self.reference_to_value(element))
         if is_identity_function(self.reference_to_value):
             return value
-        return reference if value is not filter_not_satisfied else filter_not_satisfied
+        return element if value is not filter_not_satisfied else filter_not_satisfied
 
     def do_filtered_draw(self, data):
         # Set of indices that have been tried so far, so that we never test