Pytest 7.0 fix

Author: HardNorth

pytest_reportportal/service.py

@@ -9,16 +9,23 @@
 from _pytest.doctest import DoctestItem
 from _pytest.main import Session
 from _pytest.nodes import File, Item
-from _pytest.python import Class, Function, Instance, Module
 from _pytest.unittest import TestCaseFunction, UnitTestCase
 from _pytest.warning_types import PytestWarning
+from pytest import Class, Function, Module
+
+try:
+    from pytest import Instance
+except ImportError:
+    # in pytest >= 7.0 this type was removed
+    Instance = type('dummy', (), {})
 from reportportal_client import ReportPortalService
 from reportportal_client.external.google_analytics import send_event
 from reportportal_client.helpers import (
     gen_attributes,
     get_launch_sys_attrs,
     get_package_version
 )
+
 from reportportal_client.service import _dict_to_payload
 from six import with_metaclass