fix Literal import

mlutze · Nov 28, 2023 · eef5dd4 · eef5dd4
1 parent ce0fb2f
commit eef5dd4
Showing 1 changed file with 9 additions and 2 deletions.
diff --git a/bibtexparser/middlewares/names.py b/bibtexparser/middlewares/names.py
@@ -5,7 +5,14 @@
 """
 import abc
 import dataclasses
-from typing import List, Literal, Tuple
+from typing import List, Tuple
+
+# Literal is only available in Python 3.8+
+try:
+    from typing import Literal
+    FirstOrLastType = Literal["first", "last"]
+except ImportError:
+    FirstOrLastType = str
 
 from bibtexparser.model import Block, Entry, Field, MiddlewareErrorBlock
 
@@ -179,7 +186,7 @@ class MergeNameParts(_NameTransformerMiddleware):
 
     def __init__(
         self,
-        style: Literal["last"] | Literal["first"] = "last",
+        style: FirstOrLastType = "last",
         allow_inplace_modification: bool = True,
         name_fields: Tuple[str] = ("author", "editor", "translator"),
     ):