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-rw-r--r--src/prompt_toolkit/contrib/regular_languages/lexer.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/prompt_toolkit/contrib/regular_languages/lexer.py b/src/prompt_toolkit/contrib/regular_languages/lexer.py
index b0a4deb..c5434cf 100644
--- a/src/prompt_toolkit/contrib/regular_languages/lexer.py
+++ b/src/prompt_toolkit/contrib/regular_languages/lexer.py
@@ -2,6 +2,7 @@
`GrammarLexer` is compatible with other lexers and can be used to highlight
the input using a regular grammar with annotations.
"""
+
from __future__ import annotations
from typing import Callable