Issue #19720: Suppressed context for some exceptions in importlib.

Lib/uuid.py

@@ -359,7 +359,10 @@ def _ifconfig_getnode():
 def _arp_getnode():
     """Get the hardware address on Unix by running arp."""
     import os, socket
+    try:
         ip_addr = socket.gethostbyname(socket.gethostname())
+    except OSError:
+        return None
 
     # Try getting the MAC addr from arp based on our IP address (Solaris).
     return _find_mac('arp', '-an', [os.fsencode(ip_addr)], lambda i: -1)