(self, data=None)
Initializes a matrix.

        @param data: the elements of the matrix as a list of lists, or C{None} to
          create a 0x0 matrix.
Initializes a matrix.
Initializes a matrix .
def __init__(self, data=None):
        """Initializes a matrix.

        @param data: the elements of the matrix as a list of lists, or C{None} to
          create a 0x0 matrix.
        """
        self._nrow, self._ncol, self._data = 0, 0, []
        self.data = data
def __init__ ( self , data = None ) : self . _nrow , self . _ncol , self . _data = 0 , 0 , [ ] self . data = data