While partition works, as advertised, array-likeinputs like, e.g. lists:
>>> np.partition([5, 4, 3, 2, 1], 2)
array([1, 2, 3, 4, 5])
argpartition raises an error if its first argument is not an ndarray:
>>> np.argpartition([5, 4, 3, 2, 1], 2)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\WinPython-32bit-sp-dev\python-2.7.5\lib\site-packages\numpy\core\fromnumeric.py", line 680, in argpartition
return a.argpartition(kth, axis, kind=kind, order=order)
AttributeError: 'list' object has no attribute 'argpartition'
While
partitionworks, as advertised, array-likeinputs like, e.g. lists:argpartitionraises an error if its first argument is not anndarray: