def get_cor():
    x = []  # 第几张图
    y = []  # dice系数是多少
    with open("results.txt", "r", encoding="utf-8") as f:
        for line in f:  # 遍历每一行
            number = re.findall(r'\d+(?:\.\d+)?', line)
            x.append(int(number[0]))
            y.append(float(number[1]))
    f.close()
    return x, y

results.txt是文本的名字，可以改成文件的名字
encoding="utf-8"是为了解决文本出现中文的办法
re.findall(r'\d+(?:\.\d+)?', line) 匹配正则式