Merge pull request #395 into main

Benjamin Moody · Benjamin Moody · commit 0457e2dd62a2 · 2022-06-24T11:16:58.000-04:00
Add missing imports in _coreio.py.
diff --git a/wfdb/io/_coreio.py b/wfdb/io/_coreio.py
@@ -1,4 +1,7 @@
+import posixpath
+
 from wfdb.io import _url
+from wfdb.io.download import config
 
 
 def _open_file(
