创建一个函数来读取两个文本文件并从中绘制图形

import matplotlib.pyplot as plt

def plot_graph(file1, file2):
    # 读取文件内容
    with open(file1, 'r') as f1, open(file2, 'r') as f2:
        data1 = f1.readlines()
        data2 = f2.readlines()

    # 解析文件内容
    x1 = []
    y1 = []
    for line in data1:
        parts = line.strip().split(',')
        x1.append(float(parts[0]))
        y1.append(float(parts[1]))

    x2 = []
    y2 = []
    for line in data2:
        parts = line.strip().split(',')
        x2.append(float(parts[0]))
        y2.append(float(parts[1]))

    # 绘制图形
    plt.plot(x1, y1, label='File 1')
    plt.plot(x2, y2, label='File 2')
    plt.xlabel('X')
    plt.ylabel('Y')
    plt.title('Graph')
    plt.legend()

    # 显示图形或保存为图片文件
    plt.show()