local variable referenced before assignment

[JoyMonteiro]

Hello!

I am trying to use datreant in one of my projects. I was trying to read a directory

my_data = dtr.Tree('/data/')
my_data.trees.children

and the second line crashes saying local variable out used before assignment.

Tried looking at the code, and it is assumed that out will exist no matter what happens.

I tried seeing which directory it failed on, and turns out there was a 'lost+found' directory
put in there by which my user did not have permission to open. When I ran scandir.walk()
on this directory, it gives nothing, and therefore, the variable out is never created.

Is there some way to make this code robust against scandir.walk() failing?

TIA,
Joy