minimum from list of tuples

data = [ (1, 7.57), (2, 2.1), (3, 1.2), (4, 2.1), (5, 0.01), 
         (6, 0.5), (7, 0.2), (8, 0.6)]
# Use t[0] to compare 0th tuple index
_min = min(data, key = lambda t: t[1])