def Indicator(pos, size, dtype):
x = numpy.zeros(size, dtype=dtype)<EOL>x[pos] = <NUM_LIT:1><EOL>return x<EOL>
Returns an array of length size and type dtype that is everywhere 0,
except in the index in pos.

:param pos: (int) specifies the position of the one entry that will be set.
:param size: (int) The total size of the array to be returned.
:param dtype: The element type (compatible with NumPy array())
       of the array to be returned.
:returns: (list) of length ``size`` and element type ``dtype``.