Use a separate ‘import’ statement for each module/package, grouped.

PEP 8 specifies:

* Imports should usually be on separate lines.

* Imports are always put at the top of the file, just after any module
  comments and docstrings, and before module globals and constants.

* Imports should be grouped in the following order:

  * Standard library imports.
  * Related third party imports.
  * Local application/library specific imports.

auth-mastodon.py

@@ -1,6 +1,15 @@
 #!/usr/bin/env python3
 
-import os, sys, logging, struct, psycopg2, bcrypt, random, atexit, time
+import atexit
+import logging
+import os
+import struct
+import sys
+import random
+import time
+
+import bcrypt
+import psycopg2
 
 
 # Database connection details. The credentials here need access to the Mastodon database, which "ejabberd" is unlikely