def test_example_features():
vw_ex = Workspace(quiet=True)
ex = vw_ex.example("1 |a two features |b more features here")
ns = vowpalwabbit.NamespaceId(ex, 1)
assert ex.get_feature_id(ns, "a") == 127530
ex.push_hashed_feature(ns, 1122)
ex.push_features("x", [("c", 1.0), "d"])
ex.push_feature(ns, 11000)
assert ex.num_features_in("x") == 2
assert ex.sum_feat_sq(ns) == 5.0
ns2 = vowpalwabbit.NamespaceId(ex, 2)
ex.push_namespace(ns2)
assert ex.pop_namespace()
def test_namespace_id():
vw_ex = Workspace(quiet=True)
ex = vw_ex.example("1 |a two features |b more features here")
nm1 = vowpalwabbit.NamespaceId(ex, 0)
nm2 = vowpalwabbit.NamespaceId(ex, 1)
nm3 = vowpalwabbit.NamespaceId(ex, 2)
assert nm1.id == 0
assert nm1.ord_ns == 97
assert nm1.ns == "a"
assert nm2.id == 1
assert nm2.ord_ns == 98
assert nm2.ns == "b"
assert nm3.id == 2
assert nm3.ord_ns == 128
assert nm3.ns == "\x80" # Represents string of ord_ns
def test_example_namespace_id():
vw_ex = Workspace(quiet=True)
ex = vw_ex.example("1 |a two features |b more features here")
ns = vowpalwabbit.NamespaceId(ex, 1)
assert isinstance(ex.get_ns(1), vowpalwabbit.NamespaceId)
assert isinstance(ex[2], vowpalwabbit.ExampleNamespace)
assert ex.setup_done is True
assert ex.num_features_in(ns) == 3
def test_example_namespace():
vw_ex = Workspace(quiet=True)
ex = vw_ex.example("1 |a two features |b more features here")
ns_id = vowpalwabbit.NamespaceId(ex, 1)
ex_nm = vowpalwabbit.ExampleNamespace(ex,
ns_id,
ns_hash=vw_ex.hash_space(ns_id.ns))
assert isinstance(ex_nm.ex, vowpalwabbit.Example)
assert isinstance(ex_nm.ns, vowpalwabbit.NamespaceId)
assert ex_nm.ns_hash == 2514386435
assert ex_nm.num_features_in() == 3
assert ex_nm[2] == (11617, 1.0) # represents (feature, value)
iter_obj = ex_nm.iter_features()
for i in range(ex_nm.num_features_in()):
assert ex_nm[i] == next(iter_obj)
assert ex_nm.pop_feature()
ex_nm.push_features(ns_id, ["c", "d"])
assert ex_nm.num_features_in() == 4
