locations = ["austx", "chntx", "santx"]

austx = ["aus.1", "aus.2", "aus.3"]

chntx = ["chn.1", "chn.2", "chn.3"]

santx = ["sat.1", "sat.2", "sat.3"]

for i in zip(locations, [austx, chntx, santx]):
    print(i)

('austx', ['aus.1', 'aus.2', 'aus.3'])
('chntx', ['chn.1', 'chn.2', 'chn.3'])
('santx', ['sat.1', 'sat.2', 'sat.3'])

locations = [["aus.1", "aus.2", "aus.3"],
             ["chn.1", "chn.2", "chn.3"],
             ["sat.1", "sat.2", "sat.3"]]

for i in locations:
    for val in i:
        print(val)

locations = ["austx", "chntx", "santx"]
lists = {"austx": ["aus.1", "aus.2", "aus.3"],
         "chntx": ["chn.1", "chn.2", "chn.3"],
         "santx": ["sat.1", "sat.2", "sat.3"]}

for i in locations:
    lst = lists[i]
    for val in lst:
        print(val)