Autogenerated type safety parameterisation of all methods

data/lookup_credentials.py

@@ -1,5 +1,9 @@
+from __future__ import annotations
+
 from dataclasses import dataclass
 
+from tornado.httputil import HTTPHeaders
+
 
 @dataclass
 class LookupCredentials:
@@ -13,7 +17,7 @@ class LookupCredentials:
     hamqth_session_id: str = ""  # alternative to username/password
 
 
-def extract_credentials(headers):
+def extract_credentials(headers: HTTPHeaders) -> LookupCredentials | None:
     """Build a LookupCredentials from HTTP request headers; returns None if no usable credentials are present."""
     creds = LookupCredentials(
         qrz_username=headers.get("X-QRZ-Username", ""),