def get_file_remote(key, session=None):
cache = LocalPath(CACHE)
cache.mkdir()
local_path = cache / (key + '.tar.gz')
if not local_path.exists():
if not session:
with SshMachine(FS) as rem:
path = rem.path(DIR) / (key + '.tar.gz')
assert path.exists()
plumbum.path.utils.copy(path, local_path)
assert local_path.exists()
else:
rem = session
path = rem.path(DIR) / (key + '.tar.gz')
assert path.exists()
plumbum.path.utils.copy(path, local_path)
assert local_path.exists()
fileobj = open(str(local_path))
return tarfile.open(fileobj=fileobj)