如何将这些数据分类为正确预测和错误预测后进行计数？

stats_all_score.head()

class   score1  score2  score3A       1.67    3.60    5.50A       3.60    3.25    2.10A       2.25    3.25    3.25B       1.17    6.50    21.00C       3.20    3.25    2.30..      ..      ..      ..

    if (stats_all_score['class'] == 'A' and stats_all_score['score1'] <= 2.20)     or (stats_all_score['class'] == 'B' and stats_all_score['score2'] <= 2.20)     or (stats_all_score['class'] == 'C' and stats_all_score['score3'] <= 2.20):        return correct_pred    else:        return wrong_pred

File "<ipython-input-16-ffc4cad0f64a>", line 3    else        ^SyntaxError: invalid syntax

回答：

if语句检查单个条件的结果，而不是多个条件的结果。你需要用()包裹你的逻辑计算。

if (condition1 or condition2 or condition3):    return something