Python 3.8-3.9 support

hugovk · Sep 25, 2023 · 097264d · 097264d
1 parent cd7acff
commit 097264d
Showing 1 changed file with 13 additions and 1 deletion.
diff --git a/src/pepotron/__init__.py b/src/pepotron/__init__.py
@@ -6,11 +6,23 @@
 import importlib.metadata
 import logging
 import warnings
-from itertools import pairwise
 from pathlib import Path
 
 from . import _cache
 
+try:
+    # Python 3.10+
+    from itertools import pairwise
+except ImportError:
+    # Python 3.9 and below
+    def pairwise(iterable):  # type: ignore
+        from itertools import tee
+
+        a, b = tee(iterable)
+        next(b, None)
+        return zip(a, b)
+
+
 __version__ = importlib.metadata.version(__name__)
 
 BASE_URL = "https://peps.python.org"