Two sort summaries of the NumPy object

# to sort objects directly without generating a new array, but modifying it on the basis of the original array
# None: If the object being sorted is a view, the original data will be modified
obj.sort ()
# This method creates a sorted copy of the original array, so the original array is not modified
np.sort (obj)

# is the same: both sorts can accept an axis parameter for sorting rows or columns
# Note: None of the two sorting methods can be set to descending order, only ascending, but will not have an effect on our access to the data because the slices of the list are equally applicable in the NumPy array

# More please find the Official document