Checkpoint

Checkpoint is normally constructed and provided to you, but if you are interested, this can give you some details.

from tune import Checkpoint
from triad import FileSystem

root = FileSystem()
fs = root.makedirs("/tmp/test", recreate=True)
checkpoint = Checkpoint(fs)
print(len(checkpoint))

0

!ls /tmp/test

with checkpoint.create() as folder:
    folder.writetext("a.txt", "test")

!ls /tmp/test

STATE  d9ed2530-20f1-42b3-8818-7fbf1b8eedf3

Here is how to create a new checkpoint under /tmp/test

with checkpoint.create() as folder:
    folder.writetext("a.txt", "test2")

!ls /tmp/test/*/

/tmp/test/8d4e7fed-2a4c-4789-a732-0cb46294e704/:
a.txt

/tmp/test/d9ed2530-20f1-42b3-8818-7fbf1b8eedf3/:
a.txt

Here is how to get the latest checkpoint folder

print(len(checkpoint))
print(checkpoint.latest.readtext("a.txt"))

2
test2