AttributeError：'ObjectBlock'对象没有属性'sp_index'

Question

我正在尝试

assert df[col].dtype in ('int', 'float64'), '{} {} {}'.format(x[col].dtype, col, x[col])

我得到了

AttributeError: 'ObjectBlock' object has no attribute 'sp_index'

pandas=0.23.3 
numpy=1.14.5