言简意赅！Python中生成混淆矩阵并保存至Excel的教程和实用代码

需导入的包

from sklearn.metrics import confusion_matrix
import seaborn as sns
import matplotlib.pyplot as plt
import pandas as pd
import numpy as np

示例代码（测试集）

# 生成混淆矩阵
y_true = []
y_pred = []
with torch.no_grad():
    for data in testloader:
        images, labels = data
        images, labels = images.to