我如何使它,如果没有短期‘长期债务’在dataframe然后short_long_term_debt = 0,但如果有然后使用最后一行?if not balance['Short Long Term Debt']: short_long_term_debt = balance['Short Long Term Debt']['2020'].iloc[0]
KeyError
我正在学习一本关于机器学习的书--学习机器学习,下面是显示MNIST图像的代码,但是当我尝试从数据集中索引单个图像时,我会得到一个keyError0。\lib\site-packages\pandas\_libs\index.pyx:136, in pandas._libs.hashtable.PyObjectHashTable.get_item()
The above exception was the direct cause of_engine.get