Create public shim around main and make that the entry point

certbot/certbot/main.py

@@ -0,0 +1,20 @@
+"""Certbot main public entry point."""
+import logging.handlers
+import sys
+
+from certbot._internal import main as internal_main
+
+
+logger = logging.getLogger(__name__)
+
+
+def main(*args, **kwargs):
+    """Shim around internal main function"""
+    return internal_main.main(*args, **kwargs)
+
+
+if __name__ == "__main__":
+    err_string = main()
+    if err_string:
+        logger.warning("Exiting with message %s", err_string)
+    sys.exit(err_string)  # pragma: no cover

certbot/setup.py

@@ -163,7 +163,7 @@ setup(
 
     entry_points={
         'console_scripts': [
-            'certbot = certbot._internal.main:main',
+            'certbot = certbot.main:main',
         ],
         'certbot.plugins': [
             'manual = certbot._internal.plugins.manual:Authenticator',

windows-installer/construct.py

@@ -147,7 +147,7 @@ files=run.bat
       renew-down.ps1
 
 [Command certbot]
-entry_point=certbot._internal.main:main
+entry_point=certbot.main:main
 extra_preamble=pywin32_paths.py
 '''.format(certbot_version=certbot_version,
            installer_suffix='win_amd64' if PYTHON_BITNESS == 64 else 'win32',