s/os.path.split/os.path.dirname/

IPython/utils/path.py

@@ -308,7 +308,7 b' def get_ipython_dir():'
                         " using a temp directory."%ipdir)
         ipdir = tempfile.mkdtemp()
     elif not os.path.exists(ipdir):
-        parent, _ = os.path.split(ipdir)
+        parent = os.path.dirname(ipdir)
         if not _writable_dir(parent):
             # ipdir does not exist and parent isn't writable
             warnings.warn("IPython parent '%s' is not a writable location,"