refine example doc and address https://github.com/deltachat/deltachat-core-rust/pull/1307#pullrequestreview-380876587

python/src/deltachat/__init__.py

@@ -4,6 +4,7 @@ from . import capi, const, hookspec
 from .capi import ffi
 from .account import Account  # noqa
 from . import eventlogger
+from .hookspec import account_hookimpl, global_hookimpl  # noqa
 
 from pkg_resources import get_distribution, DistributionNotFound
 try:
@@ -104,14 +105,13 @@ def run_cmdline(argv=None, account_plugins=None):
         argv = sys.argv
 
     parser = argparse.ArgumentParser(prog=argv[0] if argv else None)
+    parser.add_argument("db", action="store", help="database file")
     parser.add_argument("--show-ffi", action="store_true", help="show low level ffi events")
-    parser.add_argument("--db", action="store", help="database file")
     parser.add_argument("--email", action="store", help="email address")
     parser.add_argument("--password", action="store", help="password")
 
     args = parser.parse_args(argv[1:])
 
-    assert args.db, "you must specify --db"
     ac = Account(args.db)
 
     if args.show_ffi:

python/src/deltachat/testplugin.py

@@ -257,9 +257,9 @@ def acfactory(pytestconfig, tmpdir, request, session_liveconfig, datadir):
                 sys.executable,
                 fn,
                 "--show-ffi",
-                "--db", bot_ac.db_path,
                 "--email", bot_cfg["addr"],
                 "--password", bot_cfg["mail_pw"],
+                bot_ac.db_path,
             ]
             print("$", " ".join(args))
             popen = subprocess.Popen(
@@ -299,7 +299,6 @@ class BotProcess:
                 if not line:
                     break
                 line = line.strip()
-                print("QUEUING:", repr(line))
                 self.stdout_queue.put(line)
         finally:
             self.stdout_queue.put(None)