Avoid AttributeError with PL_version_info in swipl <= 8.4.2 (#154)

Avoid AttributeError with PL_version_info
yuce · Jun 8, 2024 · 8b002d4 · 8b002d4
1 parent 3171d8a
commit 8b002d4
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diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
@@ -29,3 +29,4 @@ Arvid Norlander
 David Cox
 Maximilian Peltzer
 Adi Harif
+Oisín Mac Fhearaí
diff --git a/pyswip/core.py b/pyswip/core.py
@@ -594,7 +594,7 @@ def check_and_call(*args):
 # https://github.com/SWI-Prolog/swipl-devel/issues/900
 # https://github.com/SWI-Prolog/swipl-devel/issues/910
 try:
-    if _lib.PL_version_info != None:
+    if hasattr(_lib, "PL_version_info"):
         PL_version = _lib.PL_version_info # swi-prolog > 8.5.2
     else:
         PL_version = _lib.PL_version # swi-prolog <= 8.5.2