diff -r 6bf88befa027 -r 92593d72e10b contrib/automation/hgautomation/pypi.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contrib/automation/hgautomation/pypi.py	Thu Sep 05 21:09:58 2019 -0700
@@ -0,0 +1,25 @@
+# pypi.py - Automation around PyPI
+#
+# Copyright 2019 Gregory Szorc <gregory.szorc@gmail.com>
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License version 2 or any later version.
+
+# no-check-code because Python 3 native.
+
+from twine.commands.upload import (
+    upload as twine_upload,
+)
+from twine.settings import (
+    Settings,
+)
+
+
+def upload(paths):
+    """Upload files to PyPI.
+
+    `paths` is an iterable of `pathlib.Path`.
+    """
+    settings = Settings()
+
+    twine_upload(settings, [str(p) for p in paths])