diff --git a/src/rougail/output_formatter/__init__.py b/src/rougail/output_formatter/__init__.py
index 949d404..b4e46be 100644
--- a/src/rougail/output_formatter/__init__.py
+++ b/src/rougail/output_formatter/__init__.py
@@ -172,10 +172,16 @@ class RougailOutputFormatter:
             filenames = self.rougailconfig["main_structural_directories"]
             extra = False
         if len(filenames) > 1:
-            raise ExtensionError(_('only one filename is allowed, not "{0}"').format(filenames))
+            raise ExtensionError(
+                _('only one filename is allowed, not "{0}"').format(filenames)
+            )
         filename = Path(filenames[0])
         if not filename.is_file():
-            raise ExtensionError(_('"{0}" is not a valid file, but only a file is allowed').format(filename))
+            raise ExtensionError(
+                _('"{0}" is not a valid file, but only a file is allowed').format(
+                    filename
+                )
+            )
 
         self.version_name, self.original_yaml = RougailUpgrade(self.rougailconfig).run(
             filename
@@ -272,19 +278,19 @@ class RougailOutputFormatter:
             for child_path in self.rougail.parents[path]:
                 child = self.rougail.objects
                 if self.rougail.has_namespace:
-                    split_path = child_path.split('.')[1:]
+                    split_path = child_path.split(".")[1:]
                 else:
-                    split_path = child_path.split('.')
+                    split_path = child_path.split(".")
                 for cpath in split_path:
-                    if cpath not in child and '{{ identifier }}' in cpath:
+                    if cpath not in child and "{{ identifier }}" in cpath:
                         # support format 1.0
-                        if cpath.replace('{{ identifier }}', '') in child:
-                            cpath = cpath.replace('{{ identifier }}', '')
-                        elif cpath.replace('{{ identifier }}', '{{ suffix }}') in child:
-                            cpath = cpath.replace('{{ identifier }}', '{{ suffix }}')
+                        if cpath.replace("{{ identifier }}", "") in child:
+                            cpath = cpath.replace("{{ identifier }}", "")
+                        elif cpath.replace("{{ identifier }}", "{{ suffix }}") in child:
+                            cpath = cpath.replace("{{ identifier }}", "{{ suffix }}")
                     child = child[cpath]
                 tmp_family[cpath] = child
-            #family_type = self.rougail.is_family_or_variable("", tmp_family, False, "")
+            # family_type = self.rougail.is_family_or_variable("", tmp_family, False, "")
             collect = Collect(
                 self.rougail,
                 name,
@@ -299,7 +305,7 @@ class RougailOutputFormatter:
             if family_type == "family":
                 family_type = collect.user_type
             if family_type is None:
-                family_type = 'family'
+                family_type = "family"
             if family_type == type_:
                 if "_type" in family:
                     del family["_type"]
@@ -346,26 +352,26 @@ class RougailOutputFormatter:
         type_ = obj.type
         if type_ in RENAME_TYPE:
             type_ = RENAME_TYPE[type_]
-        if type_ == 'cidr' or type_ == 'network_cidr':
-            if type_ == 'cidr':
-                type_ = 'ip'
+        if type_ == "cidr" or type_ == "network_cidr":
+            if type_ == "cidr":
+                type_ = "ip"
             else:
-                type_ = 'network'
+                type_ = "network"
             if not obj.params:
                 obj.params = []
-            key = 'cidr'
+            key = "cidr"
             param = AnyParam(
-                        key='cidr',
-                        value=True,
-                        type="any",
-                        path=None,
-                        attribute=None,
-                        family_is_dynamic=None,
-                        namespace=self.rougail.namespace,
-                        xmlfiles=obj.xmlfiles,
-                    )
+                key="cidr",
+                value=True,
+                type="any",
+                path=None,
+                attribute=None,
+                family_is_dynamic=None,
+                namespace=self.rougail.namespace,
+                xmlfiles=obj.xmlfiles,
+            )
             obj.params.append(param)
-        if type_ == 'choice':
+        if type_ == "choice":
             variable_obj = self.rougail.choices
         elif type_ == "regexp":
             variable_obj = self.rougail.regexp
@@ -385,7 +391,9 @@ class RougailOutputFormatter:
                 continue
             value = self.object_to_yaml(attr, type_, value, multi, path)
             if isinstance(value, dict) and "identifier" in value:
-                value["identifier"] = self.object_to_yaml("identifier", type_, value["identifier"], True, path)
+                value["identifier"] = self.object_to_yaml(
+                    "identifier", type_, value["identifier"], True, path
+                )
             variable[attr] = value
         if variable.get("mandatory") is True and None not in variable.get(
             "choices", []
@@ -395,14 +403,20 @@ class RougailOutputFormatter:
             if isinstance(obj.default, VariableCalculation):
                 is_multi = "multi" in variable and variable["multi"] is True
                 if "type" in variable or is_multi:
-                    other_path = self.rougail.paths.get_full_path(obj.default.variable, path)
+                    other_path = self.rougail.paths.get_full_path(
+                        obj.default.variable, path
+                    )
                     if other_path in self.rougail.paths:
                         other_obj = self.rougail.paths[other_path]
                         if "type" in variable and variable["type"] == other_obj.type:
                             del variable["type"]
                         if is_multi and obj.multi:
                             del variable["multi"]
-            if "type" in variable and isinstance(obj.default, IndexCalculation) and variable["type"] == "integer":
+            if (
+                "type" in variable
+                and isinstance(obj.default, IndexCalculation)
+                and variable["type"] == "integer"
+            ):
                 del variable["type"]
             if "type" in variable and variable["type"] in [
                 "string",
@@ -555,7 +569,9 @@ class RougailOutputFormatter:
                 jinja["return_type"] = return_type
             if value.description:
                 if "\n" in value.description:
-                    jinja["description"] = LiteralScalarString(value.description.strip())
+                    jinja["description"] = LiteralScalarString(
+                        value.description.strip()
+                    )
                 else:
                     jinja["description"] = value.description.strip()
             if value.warnings:
@@ -598,7 +614,9 @@ class RougailOutputFormatter:
                 del variable["type"]
             if value.description:
                 if "\n" in value.description:
-                    variable["description"] = LiteralScalarString(value.description.strip())
+                    variable["description"] = LiteralScalarString(
+                        value.description.strip()
+                    )
                 else:
                     variable["description"] = value.description.strip()
             return variable
diff --git a/src/rougail/output_formatter/i18n.py b/src/rougail/output_formatter/i18n.py
index 612295e..9c7b095 100644
--- a/src/rougail/output_formatter/i18n.py
+++ b/src/rougail/output_formatter/i18n.py
@@ -24,4 +24,3 @@ t = translation(
 )
 
 _ = t.gettext
-