from numpy import *
listS = [[1, 2, 3, 4, 5], [6, 7, 8, 9, 10], [20, 30, 40, 50, 60, 70, 80, 90, 100]]
print(listS)
temp_array = array(listS, dtype=object)
print(temp_array)
listR = temp_array.tolist()
print(listR)
>>>b['efggt', 'ssss', 'aege22']
>>>c = sort(b)
>>>c
array(['aege22', 'efggt', 'ssss'],
dtype='|S6')
>>>c = list(sort(b))
>>>c
['aege22', 'efggt', 'ssss']