def test_exists(tmp_dir, dvc):
tmp_dir.gen("foo", "foo")
dvc.add("foo")
(tmp_dir / "foo").unlink()
tree = RepoTree(dvc)
assert tree.exists("foo")
def _read_metrics(repo, metrics, rev):
tree = RepoTree(repo)
res = {}
for metric in metrics:
if not tree.exists(fspath_py35(metric)):
continue
with tree.open(fspath_py35(metric), "r") as fobj:
try:
# NOTE this also supports JSON
val = yaml.safe_load(fobj)
except yaml.YAMLError:
logger.debug(
"failed to read '%s' on '%s'", metric, rev, exc_info=True
)
continue
val = _extract_metrics(val)
if val:
res[str(metric)] = val
return res
