Use pathlib.Path to resolve paths

* is_block_device() is no longer needed
  * (pathlib.Path provides that functionality)

.bin/Scripts/functions/ufd.py

@@ -1,24 +1,21 @@
 # Wizard Kit: Functions - UFD
 
+import pathlib
 from functions.common import *
 
 
 def get_full_path(item):
-  """Get full path to item, returns str."""
-  #TODO
-  pass
+  """Get full path to item, returns pathlib.Path obj."""
+  path_obj = pathlib.Path(item).resolve()
+  if not path_obj.exists():
+    raise FileNotFoundError(path_obj)
+
+  return path_obj
 
 
-def is_block_device(item):
-  """Verify item is a block device, returns bool."""
-  #TODO
-  pass
-
-
-def is_valid_main_kit(path):
-  """Verify path contains the main kit, returns bool."""
-  #TODO
-  pass
+def is_valid_main_kit(path_obj):
+  """Verify PathObj contains the main kit, returns bool."""
+  return path_obj.is_dir() and path_obj.joinpath('.bin').exists()
 
 
 if __name__ == '__main__':