shmarray.py 文件源码

def __new__(cls, ctypesArray, shape, dtype=float,
                strides=None, offset=0, order=None):

        # some magic (copied from numpy.ctypeslib) to make sure the ctypes array
        # has the array interface
        tp = type(ctypesArray)
        try:
            tp.__array_interface__
        except AttributeError:
            ctypeslib.prep_array(tp)

        obj = numpy.ndarray.__new__(cls, shape, dtype, ctypesArray, offset, strides,
                                    order)

        # keep track of the underlying storage
        # this may not be strictly necessary as the same info should be stored in .base
        obj.ctypesArray = ctypesArray

        return obj