Add a new `ls_r` method

Instead of having a `ls` method that when used recursively
*always* returns the absolute path of items in the fake in
memory storage tree and *relative* paths (when used in
non-recursive mode) add a new `ls_r` method that can return
absolute *or* relative paths.

In the future it is highly likely that the the `ls` recursive
keyword argument will be removed (so preferring and
moving to the `ls_r` should occur earlier rather than
later), so this also adds a debtcollector removed keyword
argument decorator over the existing `ls` to ensure that users
are aware of this change (as well as a adjusted docstring).

Fixes bug 1458114

Change-Id: Id2a5869e94ac44679020a14297d1073d1dc2718f

1 files changed, 1 insertions, 1 deletions

diff --git a/taskflow/examples/dump_memory_backend.py b/taskflow/examples/dump_memory_backend.py
index 2e3aee7..6c6d548 100644
--- a/taskflow/examples/dump_memory_backend.py
+++ b/taskflow/examples/dump_memory_backend.py
@@ -70,7 +70,7 @@ e.run()
 print("---------")
 print("After run")
 print("---------")
-for path in backend.memory.ls(backend.memory.root_path, recursive=True):
+for path in backend.memory.ls_r(backend.memory.root_path, absolute=True):
     value = backend.memory[path]
     if value:
         print("%s -> %s" % (path, value))