intersphinx python.org https

docs/conf.py

@@ -251,7 +251,7 @@ texinfo_documents = [
 
 # Example configuration for intersphinx: refer to the Python standard library.
 intersphinx_mapping = {
-    "python": ('http://docs.python.org/', None),
+    "python": ('https://docs.python.org/3/', None),
     "persistent": ('https://persistent.readthedocs.io/en/latest/', None),
     "ZODB": ("http://www.zodb.org/en/latest/", None),
 }