12.7) Information On Arrays

You can get some of the characteristics of your arrays from its attributes. Attributes are values associated with a specific type of object, in the same way that methods are functions associated with a specific type of object. The number of dimensions and the shape or size of an array are stored as attributes of the array. Here’s how you can access them:

>>> B=np.ones((2,3,4))  # create the array B
>>> B.ndim              # the number of dimensions
3
>>> B.shape             # the shape of the array (i.e. 2 by 3 by 4)
(2L, 3L, 4L)
>>> B.size              # the total number of elements of the array
24
>>> B.dtype             # the type of data stored in the array
dtype('float64')