Merge pull request #23 from AlexanderWells-diamond/fix_cothread_warning

Only print warning when using old cothread version

src/python/epicscorelibs/path/cothread.py

@@ -14,8 +14,18 @@
 
 from . import get_lib
 
-if 'cothread.load_ca' in sys.modules or 'cothread.catools' in sys.modules:
-    warnings.warn("epicscorelibs.path.cothread must be imported before cothread.catools to have effect")
+def check_cothread_order():
+    if "cothread" not in sys.modules:
+        return
+    cothread = sys.modules.get("cothread")
+    # >= 2.16 will attempt to import this module
+    ver = tuple(int(c) for c in cothread.__version__.split("."))
+    if ver < (2, 16):
+        warnings.warn("epicscorelibs.path.cothread must be imported before cothread.catools to have effect")
+
+
+check_cothread_order()
+del check_cothread_order
 
 # don't override if already set
 if 'CATOOLS_LIBCA_PATH' not in os.environ: