Configure linters.

Introduce flake8 and mypy for better error checking.
Fix all errors and warnings emitted by those.
Also fix type error with `url_for`.

1 files changed, 3 insertions, 3 deletions

diff --git a/mu4web/xapian.py b/mu4web/xapian.py
index 8aebf72..d23b2d1 100644
--- a/mu4web/xapian.py
+++ b/mu4web/xapian.py
@@ -1,7 +1,8 @@
 import subprocess
 from typing import Optional
 
-def metadata_list(db, prefix: Optional[str] = None) -> list[str]:
+
+def metadata_list(db: str, prefix: Optional[str] = None) -> list[str]:
     cmdline = ['xapian-metadata', 'list', db]
     if prefix:
         cmdline.append(prefix)
@@ -9,8 +10,7 @@ def metadata_list(db, prefix: Optional[str] = None) -> list[str]:
     return cmd.stdout.split('\n')
 
 
-def metadata_get(db, key: str) -> str:
+def metadata_get(db: str, key: str) -> str:
     cmd = subprocess.run(['xapian-metadata', 'get', db, key],
                          capture_output=True, text=True)
     return cmd.stdout.strip()
-