fix: drop usage of Literal to fix typing_extensions/pydantic issue

Author: Soheyl

assemblyai/types.py

@@ -7,7 +7,7 @@
 except ImportError:
     from pydantic.v1 import UUID4, BaseModel, BaseSettings, Extra, Field
 
-from typing_extensions import Literal, Self
+from typing_extensions import Self
 
 
 class AssemblyAIError(Exception):
@@ -1607,9 +1607,8 @@ class RealtimeSessionOpened(BaseModel):
     Once a real-time session is opened, the client will receive this message
     """
 
-    message_type: Literal[
-        RealtimeMessageTypes.session_begins
-    ] = RealtimeMessageTypes.session_begins
+    message_type: RealtimeMessageTypes
+
 
     session_id: UUID4
     "Unique identifier for the established session."
@@ -1641,9 +1640,7 @@ class RealtimeTranscript(BaseModel):
     Base class for real-time transcript messages.
     """
 
-    message_type: Literal[
-        RealtimeMessageTypes.partial_transcript, RealtimeMessageTypes.final_transcript
-    ]
+    message_type: RealtimeMessageTypes
     "Describes the type of message"
 
     audio_start: int
@@ -1674,9 +1671,7 @@ class RealtimePartialTranscript(RealtimeTranscript):
     As you send audio data to the service, the service will immediately start responding with partial transcripts.
     """
 
-    message_type: Literal[
-        RealtimeMessageTypes.partial_transcript
-    ] = RealtimeMessageTypes.partial_transcript
+    message_type: RealtimeMessageTypes
 
 
 class RealtimeFinalTranscript(RealtimeTranscript):
@@ -1686,9 +1681,7 @@ class RealtimeFinalTranscript(RealtimeTranscript):
     sent to you so far with higher accuracy, as well as add punctuation and casing to the transcription text.
     """
 
-    message_type: Literal[
-        RealtimeMessageTypes.final_transcript
-    ] = RealtimeMessageTypes.final_transcript
+    message_type: RealtimeMessageTypes
 
     punctuated: bool
     "Whether the transcript has been punctuated and cased"