diff --git a/src/rougail/annotator/variable.py b/src/rougail/annotator/variable.py
index c95982dd4..0568b17d1 100644
--- a/src/rougail/annotator/variable.py
+++ b/src/rougail/annotator/variable.py
@@ -259,5 +259,9 @@ class Annotator(Walk):  # pylint: disable=R0903
                 if value not in choices:
                     msg = _(
                         'the variable "{0}" has an unvalid default value "{1}" should be in {2}'
-                    ).format(variable.path, value, display_list(choices, separator="or", add_quote=True))
+                    ).format(
+                        variable.path,
+                        value,
+                        display_list(choices, separator="or", add_quote=True),
+                    )
                     raise DictConsistencyError(msg, 26, variable.xmlfiles)
diff --git a/src/rougail/config.py b/src/rougail/config.py
index ed2091503..e7cd3e10c 100644
--- a/src/rougail/config.py
+++ b/src/rougail/config.py
@@ -403,7 +403,7 @@ suffix:
   disabled:
     variable: upgrade"""
     for process in processes:
-        if processes[process] or process == 'output':
+        if processes[process] or process == "output":
             objects = processes[process]
             rougail_process += """
   {NAME}:
@@ -435,7 +435,9 @@ suffix:
                         rougail_process += """        {% if _.output == 'NAME' %}
         Cannot load user data for NAME output
         {% endif %}
-""".replace("NAME", hidden_output)
+""".replace(
+                            "NAME", hidden_output
+                        )
             elif objects:
                 rougail_process += "    default: {DEFAULT}".format(
                     DEFAULT=objects[0]["name"]
diff --git a/src/rougail/convert.py b/src/rougail/convert.py
index d924e881e..aae1a88a2 100644
--- a/src/rougail/convert.py
+++ b/src/rougail/convert.py
@@ -467,11 +467,15 @@ class ParserVariable:
             extra_keys = set(obj) - self.variable_attrs
             if not extra_keys:
                 for key, value in obj.items():
-                    if isinstance(value, dict) and key != 'params' and not self.is_calculation(
-                        key,
-                        value,
-                        self.variable_calculations,
-                        False,
+                    if (
+                        isinstance(value, dict)
+                        and key != "params"
+                        and not self.is_calculation(
+                            key,
+                            value,
+                            self.variable_calculations,
+                            False,
+                        )
                     ):
                         break
                 else:
diff --git a/src/rougail/i18n.py b/src/rougail/i18n.py
index f94076230..38f2fb6f1 100644
--- a/src/rougail/i18n.py
+++ b/src/rougail/i18n.py
@@ -27,6 +27,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 from gettext import translation
 from pathlib import Path
 
-t = translation('rougail', str(Path(__file__).parent / 'locale'), fallback=True)
+t = translation("rougail", str(Path(__file__).parent / "locale"), fallback=True)
 
 _ = t.gettext
diff --git a/src/rougail/structural_commandline/annotator.py b/src/rougail/structural_commandline/annotator.py
index 4cda66c83..e3e9cab91 100644
--- a/src/rougail/structural_commandline/annotator.py
+++ b/src/rougail/structural_commandline/annotator.py
@@ -64,12 +64,14 @@ class Annotator(Walk):
         for letter in alternative_name:
             all_letters += letter
             if all_letters == "h":
-                msg = _('alternative_name "{0}" conflict with "--help"').format(alternative_name)
+                msg = _('alternative_name "{0}" conflict with "--help"').format(
+                    alternative_name
+                )
                 raise DictConsistencyError(msg, 202, variable.xmlfiles)
             if all_letters in self.alternative_names:
-                msg = _(
-                    'conflict alternative_name "{0}": "{1}" and "{2}"'
-                ).format(alternative_name, variable_path, self.alternative_names[all_letters])
+                msg = _('conflict alternative_name "{0}": "{1}" and "{2}"').format(
+                    alternative_name, variable_path, self.alternative_names[all_letters]
+                )
                 raise DictConsistencyError(msg, 202, variable.xmlfiles)
 
         self.alternative_names[alternative_name] = variable_path
diff --git a/src/rougail/utils.py b/src/rougail/utils.py
index e87ec7686..ba242c3cc 100644
--- a/src/rougail/utils.py
+++ b/src/rougail/utils.py
@@ -114,9 +114,9 @@ def get_jinja_variable_to_param(
         for g in parsed_content.find_all(Getattr):
             variables.add(recurse_getattr(g))
     except TemplateSyntaxError as err:
-        msg = _(
-            'error in jinja "{0}" for the variable "{1}": {2}'
-        ).format(jinja_text, current_path, err)
+        msg = _('error in jinja "{0}" for the variable "{1}": {2}').format(
+            jinja_text, current_path, err
+        )
         raise DictConsistencyError(msg, 39, xmlfiles) from err
     variables = list(variables)
     variables.sort(reverse=True)