display stuff, key prop

katrain/core/lang.py

@@ -77,3 +77,12 @@ class Lang(Observable):
 
 DEFAULT_LANGUAGE = "en"
 i18n = Lang(DEFAULT_LANGUAGE)
+
+
+def rank_label(rank):
+    if rank is None:
+        return "??k"
+    if rank > 0:
+        return f"{rank:.0f}{i18n._('strength:dan')}"
+    else:
+        return f"{1-rank:.0f}{i18n._('strength:kyu')}"