Change ydb package imports to relative

Author: qrort

ydb/_errors.py

@@ -1,7 +1,7 @@
 from dataclasses import dataclass
 from typing import Optional
 
-from ydb import issues
+from . import issues
 
 _errors_retriable_fast_backoff_types = [
     issues.Unavailable,

ydb/scheme_test.py

@@ -1,9 +1,9 @@
-from ydb.scheme import (
+from .scheme import (
     SchemeEntryType,
     _wrap_scheme_entry,
     _wrap_list_directory_response,
 )
-from ydb._apis import ydb_scheme
+from ._apis import ydb_scheme
 
 
 def test_wrap_scheme_entry():

ydb/table_test.py

@@ -1,5 +1,5 @@
 from unittest import mock
-from ydb import (
+from . import (
     retry_operation_impl,
     YdbRetryOperationFinalResult,
     issues,

ydb/tornado/tornado_helpers.py

@@ -7,7 +7,7 @@
 except ImportError:
     tornado = None
 
-from ydb.table import retry_operation_impl, YdbRetryOperationSleepOpt
+from .table import retry_operation_impl, YdbRetryOperationSleepOpt
 
 
 def as_tornado_future(foreign_future, timeout=None):