New archi: domain driven development

Working but need to check out code

domain/subtitles/exceptions.py

@@ -0,0 +1,12 @@
+"""Subtitle domain exceptions."""
+from ..shared.exceptions import DomainException, NotFoundError
+
+
+class SubtitleNotFound(NotFoundError):
+    """Raised when a subtitle is not found."""
+    pass
+
+
+class InvalidSubtitleFormat(DomainException):
+    """Raised when subtitle format is invalid."""
+    pass