Swallow and print errors instead of crashing

PFERD/errors.py

@@ -0,0 +1,28 @@
+"""
+An error logging decorator.
+"""
+
+import logging
+from typing import Any, Callable
+
+from .logging import FatalException, PrettyLogger
+
+LOGGER = logging.getLogger(__name__)
+PRETTY = PrettyLogger(LOGGER)
+
+
+def swallow_and_print_errors(function: Callable) -> Callable:
+    """
+    Decorates a function, swallows all errors, logs them and returns none if one occurred.
+    """
+    def inner(*args: Any, **kwargs: Any) -> Any:
+        # pylint: disable=broad-except
+        try:
+            return function(*args, **kwargs)
+        except FatalException as error:
+            PRETTY.error(str(error))
+            return None
+        except Exception as error:
+            Console().print_exception()
+            return None
+    return inner

PFERD/pferd.py

@@ -9,6 +9,7 @@ from typing import List, Optional, Union
 from .cookie_jar import CookieJar
 from .diva import (DivaDownloader, DivaDownloadStrategy, DivaPlaylistCrawler,
                    diva_download_new)
+from .errors import swallow_and_print_errors
 from .ilias import (IliasAuthenticator, IliasCrawler, IliasDirectoryFilter,
                     IliasDownloader, IliasDownloadStrategy,
                     KitShibbolethAuthenticator, download_modified_or_new)
@@ -89,6 +90,7 @@ class Pferd(Location):
 
         return organizer
 
+    @swallow_and_print_errors
     def ilias_kit(
             self,
             target: PathLike,
@@ -141,6 +143,7 @@ class Pferd(Location):
             clean=clean,
         )
 
+    @swallow_and_print_errors
     def diva_kit(
             self,
             target: Union[PathLike, Organizer],