diff --git a/src/slurminade/__init__.py b/src/slurminade/__init__.py
index 784beb9..53695d3 100644
--- a/src/slurminade/__init__.py
+++ b/src/slurminade/__init__.py
@@ -53,6 +53,12 @@ def clean_up():
 - guard.py: Contains code to prevent you accidentally DDoSing your infrastructure.
 - options.py: Contains a simple data structure to save slurm options.
 """
+# set default logging
+import logging
+import sys
+
+# Set up the root logger to print to stdout by default
+logging.basicConfig(level=logging.INFO, stream=sys.stdout)
 
 # flake8: noqa F401
 from .function import slurmify, shell
@@ -97,10 +103,3 @@ def clean_up():
     "shell",
     "node_setup",
 ]
-
-# set default logging
-import logging
-import sys
-
-# Set up the root logger to print to stdout by default
-logging.basicConfig(level=logging.INFO, stream=sys.stdout)
diff --git a/src/slurminade/conf.py b/src/slurminade/conf.py
index 479d78d..1a63f43 100644
--- a/src/slurminade/conf.py
+++ b/src/slurminade/conf.py
@@ -3,6 +3,7 @@
 """
 
 import json
+import logging
 import os.path
 import typing
 from pathlib import Path
@@ -20,7 +21,9 @@ def _load_conf(path: Path):
         else:
             return {}
     except Exception as e:
-        print(f"slurminade could not open default configuration {path}!\n{e!s}")
+        logging.getLogger("slurminade").error(
+            f"slurminade could not open default configuration {path}!\n{e!s}"
+        )
     return {}
 
 
diff --git a/src/slurminade/dispatcher.py b/src/slurminade/dispatcher.py
index 0b43dc8..8aa0a27 100644
--- a/src/slurminade/dispatcher.py
+++ b/src/slurminade/dispatcher.py
@@ -21,13 +21,12 @@
 from .function_call import FunctionCall
 from .function_map import FunctionMap, get_entry_point
 from .guard import dispatch_guard
+from .job_reference import JobReference
 from .options import SlurmOptions
 
 # MAX_ARG_STRLEN on a Linux system with PAGE_SIZE 4096 is 131072
 DEFAULT_MAX_ARG_LENGTH = 100000
 
-from .job_reference import JobReference
-
 
 class Dispatcher(abc.ABC):
     """
diff --git a/src/slurminade/function.py b/src/slurminade/function.py
index 941776d..bee029a 100644
--- a/src/slurminade/function.py
+++ b/src/slurminade/function.py
@@ -118,13 +118,12 @@ def __call__(self, *args, **kwargs):
         """
         if self.call_policy == CallPolicy.LOCALLY:
             return self.run_locally(*args, **kwargs)
-        elif self.call_policy == CallPolicy.DISTRIBUTED:
+        if self.call_policy == CallPolicy.DISTRIBUTED:
             return self.distribute(*args, **kwargs)
-        elif self.call_policy == CallPolicy.DISTRIBUTED_BLOCKING:
+        if self.call_policy == CallPolicy.DISTRIBUTED_BLOCKING:
             return self.distribute_and_wait(*args, **kwargs)
-        else:
-            msg = "Unknown call policy."
-            raise RuntimeError(msg)
+        msg = "Unknown call policy."
+        raise RuntimeError(msg)
 
     def get_entry_point(self) -> Path:
         """
diff --git a/src/slurminade/function_map.py b/src/slurminade/function_map.py
index a5ff94b..3868add 100644
--- a/src/slurminade/function_map.py
+++ b/src/slurminade/function_map.py
@@ -23,8 +23,8 @@ class FunctionMap:
     # The slurm node just executes the file content of a script, so the file name is lost.
     # slurminade will set this value in the beginning to reconstruct it.
     entry_point: typing.Optional[str] = None
-    _data = {}
-    _ids = set()
+    _data: typing.ClassVar[typing.Dict[str, typing.Callable]] = {}
+    _ids: typing.ClassVar[typing.Set[str]] = set()
 
     @staticmethod
     def get_id(func: typing.Callable) -> str:
diff --git a/src/slurminade/options.py b/src/slurminade/options.py
index b22fb3e..ee1ca70 100644
--- a/src/slurminade/options.py
+++ b/src/slurminade/options.py
@@ -11,8 +11,9 @@ class SlurmOptions(dict):
     def _items(self):
         for k, v in self.items():
             if isinstance(v, dict):
-                v = SlurmOptions(**v)
-            yield k, v
+                yield k, SlurmOptions(**v)
+            else:
+                yield k, v
 
     def __hash__(self):
         return hash(tuple(sorted(hash((k, v)) for k, v in self._items())))