fixes #378

Author: seperman

deepdiff/diff.py

@@ -1322,10 +1322,13 @@ def _diff_booleans(self, level, local_tree=None):
         if level.t1 != level.t2:
             self._report_result('values_changed', level, local_tree=local_tree)
 
-    def _diff_numbers(self, level, local_tree=None):
+    def _diff_numbers(self, level, local_tree=None, report_type_change=True):
         """Diff Numbers"""
-        t1_type = "number" if self.ignore_numeric_type_changes else level.t1.__class__.__name__
-        t2_type = "number" if self.ignore_numeric_type_changes else level.t2.__class__.__name__
+        if report_type_change:
+            t1_type = "number" if self.ignore_numeric_type_changes else level.t1.__class__.__name__
+            t2_type = "number" if self.ignore_numeric_type_changes else level.t2.__class__.__name__
+        else:
+            t1_type = t2_type = ''
 
         if self.math_epsilon is not None:
             if not is_close(level.t1, level.t2, abs_tol=self.math_epsilon):
@@ -1503,8 +1506,8 @@ def _diff(self, level, parents_ids=frozenset(), _original_type=None, local_tree=
         if self._skip_this(level):
             return
 
+        report_type_change = True
         if get_type(level.t1) != get_type(level.t2):
-            report_type_change = True
             for type_group in self.ignore_type_in_groups:
                 if self.type_check_func(level.t1, type_group) and self.type_check_func(level.t2, type_group):
                     report_type_change = False
@@ -1533,7 +1536,7 @@ def _diff(self, level, parents_ids=frozenset(), _original_type=None, local_tree=
             self._diff_uuids(level, local_tree=local_tree)
 
         elif isinstance(level.t1, numbers):
-            self._diff_numbers(level, local_tree=local_tree)
+            self._diff_numbers(level, local_tree=local_tree, report_type_change=report_type_change)
 
         elif isinstance(level.t1, Mapping):
             self._diff_dict(level, parents_ids, local_tree=local_tree)

tests/test_diff_text.py

@@ -1196,6 +1196,10 @@ def test_ignore_type_in_groups_str_and_datetime(self):
         result = {'values_changed': {'root[4]': {'new_value': 'now', 'old_value': now}}}
         assert result == ddiff
 
+    def test_ignore_type_in_groups_float_vs_decimal(self):
+        diff = DeepDiff(float('0.1'), Decimal('0.1'), ignore_type_in_groups=[(float, Decimal)], significant_digits=2)
+        assert not diff
+
     @pytest.mark.parametrize("t1, t2, significant_digits, result", [
         ([0.1], [Decimal('0.10')], 55,
             {'values_changed': {'root[0]': {'new_value': Decimal('0.10'), 'old_value': 0.1}}}),  # Due to floating point arithmetics with high significant digits.