在Python中使用help帮助
>>> import numpy
>>> help(numpy.argsort)
Help on function argsort in module numpy.core.fromnumeric:
argsort(a, axis=-1, kind=‘quicksort‘, order=None)
Returns the indices that would sort an array.
Perform an indirect sort along the given axis using the algorithm specified
by the `kind` keyword. It returns an array of indices of the same shape as
`a` that index data along the given axis in sorted order.
原文：http://www.cnblogs.com/yyxayz/p/4034034.html