np.sort(students, order='height')
np.array(students_details, dtype=data_type)
'name', 'S15'
'class', int
'height', float
'James', 5, 48.5
'Nail', 6, 52.5
'Paul', 5, 42.10
'Pit', 5, 40.11
data_type
students_details
Original array
b'James', 5, 48.5
b'Nail', 6, 52.5
b'Paul', 5, 42.1
b'Pit', 5, 40.11
Sort by height
b'Pit', 5, 40.11
b'Paul', 5, 42.1
b'James', 5, 48.5
b'Nail', 6, 52.5