old_contents: __all__ = ['ones','zeros','empty','identity','rand','randn','eye']
  
  from numpy.core.defmatrix import matrix, asmatrix
  from numpy import ndarray, array
  import numpy as N
  
  def empty(shape, dtype=None, order='C'):
      """return an empty matrix of the given shape
      """
      return ndarray.__new__(matrix, shape, dtype, order=order)
          
  def ones(shape, dtype=None, order='C'):
      """return a matrix initialized to all ones
      """
      a = ndarray.__new__(matrix, shape, dtype, order=order)
      a.fill(1)
      return a
  
  def zeros(shape, dtype=None, order='C'):
      """return a matrix initialized to all zeros
      """
      a = ndarray.__new__(matrix, shape, dtype, order=order)    
      a.fill(0)
      return a
  
  def identity(n,dtype=None):
      """identity(n) returns the identity matrix of shape n x n.
      """
      a = array([1]+n*[0],dtype=dtype)
      b = empty((n,n),dtype=dtype)
      b.flat = a
      return b
  
  def eye(N,M=None, k=0, dtype=float):
      return asmatrix(N.eye(N,M,k,dtype))
  
  def rand(*args):
      return asmatrix(N.rand(*args))
  
  def randn(*args):
      return asmatrix(N.rand(*args))
  
new_contents: __all__ = ['ones','zeros','empty','identity','rand','randn','eye']
  
  from numpy.core.defmatrix import matrix, asmatrix
  from numpy import ndarray, array
  import numpy as N
  
  def empty(shape, dtype=None, order='C'):
      """return an empty matrix of the given shape
      """
      return ndarray.__new__(matrix, shape, dtype, order=order)
          
  def ones(shape, dtype=None, order='C'):
      """return a matrix initialized to all ones
      """
      a = ndarray.__new__(matrix, shape, dtype, order=order)
      a.fill(1)
      return a
  
  def zeros(shape, dtype=None, order='C'):
      """return a matrix initialized to all zeros
      """
      a = ndarray.__new__(matrix, shape, dtype, order=order)    
      a.fill(0)
      return a
  
  def identity(n,dtype=None):
      """identity(n) returns the identity matrix of shape n x n.
      """
      a = array([1]+n*[0],dtype=dtype)
      b = empty((n,n),dtype=dtype)
      b.flat = a
      return b
  
  def eye(n,M=None, k=0, dtype=float):
      return asmatrix(N.eye(n,M,k,dtype))
  
  def rand(*args):
      return asmatrix(N.rand(*args))
  
  def randn(*args):
      return asmatrix(N.rand(*args))
  
subject: fix clobbering of N