fix #934

TIDALDL-PY/tidal_dl/lang/language.py

@@ -59,15 +59,21 @@ class Language(object):
     def __init__(self) -> None:
         self.select = LangEnglish()
 
+    def __toInt__(self, str):
+        try:
+            return int(str)
+        except:
+            return 0
+    
     def setLang(self, index):
-        index = int(index)
+        index = self.__toInt__(index)
         if index >= 0 and index < len(_ALL_LANGUAGE_):
             self.select = _ALL_LANGUAGE_[index][1]
         else:
             self.select = LangEnglish()
 
     def getLangName(self, index):
-        index = int(index)
+        index = self.__toInt__(index)
         if index >= 0 and index < len(_ALL_LANGUAGE_):
             return _ALL_LANGUAGE_[index][0]
         return ""