wfdb.io._coreio: add missing 'import posixpath'.

Benjamin Moody · Benjamin Moody · commit 4b4683453db0 · 2022-06-23T18:46:39.000-04:00
diff --git a/wfdb/io/_coreio.py b/wfdb/io/_coreio.py
@@ -1,3 +1,5 @@
+import posixpath
+
 from wfdb.io import _url
 
 
