tags: TagLine constructor now supports multiline taglines and multiple spaces

chatmastermind/message.py

@@ -45,7 +45,7 @@ class Question(str):
     """
     A single question with a defined header.
     """
-    header = '=== QUESTION ==='
+    header: Final[str] = '=== QUESTION ==='
 
     def __new__(cls: Type[QuestionInst], string: str) -> QuestionInst:
         """
@@ -67,7 +67,7 @@ class Answer(str):
     """
     A single answer with a defined header.
     """
-    header = '=== ANSWER ==='
+    header: Final[str] = '=== ANSWER ==='
 
     def __new__(cls: Type[AnswerInst], string: str) -> AnswerInst:
         """

chatmastermind/tags.py

@@ -1,7 +1,7 @@
 """
 Module implementing tag related functions and classes.
 """
-from typing import Type, TypeVar, Optional
+from typing import Type, TypeVar, Optional, Final
 
 TagInst = TypeVar('TagInst', bound='Tag')
 TagLineInst = TypeVar('TagLineInst', bound='TagLine')
@@ -16,9 +16,9 @@ class Tag(str):
     A single tag. A string that can contain anything but the default separator (' ').
     """
     # default separator
-    default_separator = ' '
+    default_separator: Final[str] = ' '
     # alternative separators (e. g. for backwards compatibility)
-    alternative_separators = [',']
+    alternative_separators: Final[list[str]] = [',']
 
     def __new__(cls: Type[TagInst], string: str) -> TagInst:
         """
@@ -98,7 +98,7 @@ class TagLine(str):
     the tags.
     """
     # the prefix
-    prefix = 'TAGS:'
+    prefix: Final[str] = 'TAGS:'
 
     def __new__(cls: Type[TagLineInst], string: str) -> TagLineInst:
         """