Add flake8 C901 noqas for following methods/functions:

TOSImporter._process_data
TOSImporter.import_attributes
get_attribute_json_schema

Errors:
./metarecord/importer/tos.py:322:5: C901 'TOSImporter._process_data' is too complex (21)
./metarecord/importer/tos.py:431:5: C901 'TOSImporter.import_attributes' is too complex (15)
./metarecord/models/structural_element.py:214:1: C901 'get_attribute_json_schema' is too complex (16)

metarecord/importer/tos.py

@@ -319,7 +319,7 @@ def _save_function(self, function):
         function_obj.error_count = function.get("error_count", 0)
         function_obj.save()
 
-    def _process_data(self, sheet, function_obj):
+    def _process_data(self, sheet, function_obj):  # noqa: C901
         data = self._get_data(sheet)
 
         if not data:
@@ -428,7 +428,7 @@ def _process_data(self, sheet, function_obj):
             child_list.append(target)
         self._save_function(function)
 
-    def import_attributes(self):
+    def import_attributes(self):  # noqa: C901
         self.logger.info("Importing attributes...")
 
         try:

metarecord/models/structural_element.py

@@ -211,7 +211,7 @@ def _get_conditionally_required_schema(
     }
 
 
-def get_attribute_json_schema(**kwargs):
+def get_attribute_json_schema(**kwargs):  # noqa: C901
     if (
         "allowed" not in kwargs or kwargs["allowed"] is None
     ):  # None means the validation isn't enabled

metarecord/views/base.py

@@ -68,7 +68,7 @@ def get_valid_attribute_dict(self):
             }
         return self._valid_attribute_dict
 
-    def get_attribute_validation_errors(self, instance, recursive=True):
+    def get_attribute_validation_errors(self, instance, recursive=True):  # noqa: C901
         """
         Check allowed and required attributes, and verify choice attributes have valid values.