bt2: field.py: add `_count` method to `_VariantField`

[babeltrace.git] / src / bindings / python / bt2 / bt2 / field.py

diff --git a/src/bindings/python/bt2/bt2/field.py b/src/bindings/python/bt2/bt2/field.py
index 4d31f8fa064517795ba0354399cea18c0301381c..7d5fdd83e1726a992d8dcb72e797cf63db0a3bfd 100644 (file)
--- a/src/bindings/python/bt2/bt2/field.py
+++ b/src/bindings/python/bt2/bt2/field.py
@@ -559,6 +559,9 @@ class _OptionField(_Field):
 class _VariantField(_ContainerField, _Field):
     _NAME = 'Variant'
 
+    def _count(self):
+        return len(self.cls)
+
     @property
     def selected_option_index(self):
         return native_bt.field_variant_get_selected_option_field_index(self._ptr)