family name could containe an integer

src/rougail/annotator.py

@@ -168,7 +168,7 @@ class ServiceAnnotator:
                 else:
                     type_ = 'string'
                 dtd_key_type = true_key + '_type'
-                
+
                 if hasattr(elt, dtd_key_type):
                     type_ = KEY_TYPE[getattr(elt, dtd_key_type)]
                 multi = isinstance(value, list)

src/rougail/loader.py

@@ -30,6 +30,8 @@ FUNC_TO_DICT = ['valid_not_equal']
 
 class ConvertDynOptionDescription(DynOptionDescription):
     def convert_suffix_to_path(self, suffix):
+        if not isinstance(suffix, str):
+            suffix = str(suffix)
         return normalize_family(suffix,
                                 check_name=False)
 

src/rougail/utils.py

@@ -10,15 +10,14 @@ def normalize_family(family_name: str,
                      allow_dot: bool=False) -> str:
     """replace space, accent, uppercase, ... by valid character
     """
-    f = family_name
-    f = f.replace('-', '_')
+    family_name = family_name.replace('-', '_')
     if not allow_dot:
-        f = f.replace('.', '_')
-    f = f.replace(' ', '_')
-    nfkd_form = unicodedata.normalize('NFKD', f)
-    f = ''.join([c for c in nfkd_form if not unicodedata.combining(c)])
-    f = f.lower()
-    if check_name and f == 'containers':
-        raise ValueError(_('"{0}" is a forbidden family name'.format(f)))
-    return f
+        family_name = family_name.replace('.', '_')
+    family_name = family_name.replace(' ', '_')
+    nfkd_form = unicodedata.normalize('NFKD', family_name)
+    family_name = ''.join([c for c in nfkd_form if not unicodedata.combining(c)])
+    family_name = family_name.lower()
+    if check_name and family_name == 'containers':
+        raise ValueError(_(f'"{family_name}" is a forbidden family name'))
+    return family_name