x = [('1', 3.0, 6), ('2', 2.0, 2), ('3', 2.0, 5), ('4', 4.0, 2), ('5', 2.0,
    5), ('6', 3.0, 6), ('7', 3.0, 5), ('8', 2.0, 5), ('9', 3.0, 5), ('10', 
    3.0, 5)]
Finding tuple in the list of tuples (sorting by multiple keys)