Add exception

src/rezzie/__init__.py

@@ -11,6 +11,7 @@
 
 import sys
 import pathlib
+from .exceptions import RezzieWasUnableToAccessResource
 
 if sys.version_info < (3, 9):
     from importlib_resources import files
@@ -20,9 +21,25 @@ def get_path(module: str, *path: str) -> pathlib.Path:
         Return a path to a resource shipped with your package. The path will last
         for the duration of test execution, and will be cleaned up automatically.
         This code works with versions of python 3.6 to 3.8.
+
+        Args:
+            module: The name of the module containing the resource.
+            path: The path to the resource, relative to the module.
+
+        Returns:
+            A pathlib.Path object pointing to the resource.
+
+        Raises:
+            RezzieWasUnableToAccessResource: Raised when Rezzie is unable to
+                access a resource.
         """
-        path = files(module).joinpath(*path)
-        return path
+        try:
+            path = files(module).joinpath(*path)
+            return path
+        except Exception as error:
+            raise RezzieWasUnableToAccessResource(
+                "Unable to access resource"
+            ) from error
 
 else:
     import atexit
@@ -34,9 +51,26 @@ def get_path(module: str, *path: setattr) -> pathlib.Path:
         Return a path to a resource shipped with your package. The path will last
         for the duration of test execution, and will be cleaned up automatically.
         This requires Python 3.9 or later.
+
+        Args:
+            module: The name of the module containing the resource.
+            path: The path to the resource, relative to the module.
+
+        Returns:
+            A pathlib.Path object pointing to the resource.
+
+        Raises:
+            RezzieWasUnableToAccessResource: Raised when Rezzie is unable to
+                access a resource.
         """
-        file_manager = ExitStack()
-        atexit.register(file_manager.close)
-        ref = importlib.resources.files(module).joinpath(*path)
-        path = file_manager.enter_context(importlib.resources.as_file(ref))
-        return path
+        try:
+            file_manager = ExitStack()
+            atexit.register(file_manager.close)
+            ref = importlib.resources.files(module).joinpath(*path)
+            path = file_manager.enter_context(importlib.resources.as_file(ref))
+            return path
+        except Exception as error:
+            file_manager.close()
+            raise RezzieWasUnableToAccessResource(
+                "Unable to access resource"
+            ) from error

src/rezzie/exceptions.py

@@ -0,0 +1,9 @@
+"""
+Rezzie exceptions
+"""
+
+
+class RezzieWasUnableToAccessResource(Exception):
+    """
+    Raised when Rezzie is unable to access a resource.
+    """