added newlines

Author: klakhov

datumaro/components/wrappers.py

@@ -7,6 +7,7 @@
 
 from datumaro.components.errors import DatasetNotFoundError
 
+
 def wrap_find_sources_recursive(importer):
     @classmethod
     def updated_find_sources_recursive(
@@ -30,6 +31,7 @@ def updated_find_sources_recursive(
 
     return updated_find_sources_recursive
 
+
 def wrap_generate_not_found_error():
     @classmethod
     def updated_generate_not_found_error(cls, path):
@@ -41,6 +43,7 @@ def updated_generate_not_found_error(cls, path):
 
     return updated_generate_not_found_error
 
+
 def wrap_importer(importer):
     mock.patch.object(
         importer, "_find_sources_recursive", new=wrap_find_sources_recursive(importer)