def append(arr, values, axis=None):
'''Append values to end of array
Keyword argument:
axis -- if None, then append flattened values to flattened array
'''
if not isinstance(values, _ds):
values = __cvt_jobj(values, dtype=None, copy=False, force=True)
if axis is None:
return _dsutils.append(arr.flatten(), values.flatten(), 0)
return _dsutils.append(arr, values, axis)
