输入图片描述这是我的代码，我试图在axis=0上连接或追加，但出现了这个错误。所有的列都是相同的，甚至数据类型也相同。

尽管在使用pd.read_csv()时，我必须指定encoding=ISO-8859-1，你认为这可能是原因吗？尽管类型是一个数据框

declinedataforclassification=declinedata[['amount_requested','Risk_Score','dti','State','emp_length','policy_code','app_month']]loandataforclassification=loandata[['loan_amnt','Risk_Score','dti','addr_state','emp_length','policy_code','issue_month']]loandataforclassification=loandataforclassification.rename(columns={'loan_amnt':'amount_requested','addr_state':'State','issue_month':'app_month'})declinedataforclassification['status']=0loandataforclassification['status']=1loandataforclassification['amount_requested']=loandataforclassification['amount_requested'].astype(float)resultdata = loandataforclassification.append('declinedataforclassification',ignore_index=True)

回答：

resultdata = loandataforclassification.append(declinedataforclassification,ignore_index=True)

应该对你有用。你现在正试图将一个字符串追加到一个数据框中。