All tests pass!

file_type.py

@@ -1,6 +1,8 @@
 # file_type.py
 # Identify type of file: file, directory, link, broken link
 
+import errno
+import os
 from pathlib import Path
 
 class FileType():
@@ -13,7 +15,7 @@ class FileType():
             if p.is_symlink():
                 return "broken-link"
             else:
-                raise FileNotFound(errno.ENOENT, os.strerror(errno.ENOENT), filename)
+                raise FileNotFoundError(errno.ENOENT, os.strerror(errno.ENOENT), filename)
         if p.is_symlink():
             return "symlink"
         if p.is_dir():