def tensor3(name=None, dtype=None):
 if (dtype is None):
  dtype = config.floatX
 type = TensorType(dtype, (False, False, False))
 return type(name)

def tensor3 ( name = None , dtype = None ) : if ( dtype is None ) : dtype = config . floatX type = TensorType ( dtype , ( False , False , False ) ) return type ( name )
return a symbolic 3-d variable .