PyTorch1加载数据初认识+Dataset

from torch.utils.data import Dataset
from PIL import Image

import cv2
import os

class MyData(Dataset):
    def __init__(self, root_dir, lable_dir):
        self.root_dir = root_dir
        self.lable_dir = lable_dir
        self.path = os.path.join(self.root_dir, self.lable_dir)
        self.img_path = os.listdir(self.path)

    def __getitem__(self, idx):
        img_name = self.img_path[idx]
        img_item_path = os.path.join(self.root_dir, self.lable_dir, img_name)
        img = Image.open(img_item_path)
        lable = self.lable_dir
        return img, lable

    def __len__(self):
        return len(self.img_path)

root_dir = "E:\\python\\learn_pytorch\\dataset\\train"
ants_lable_dir = "ants"
bees_lable_dir = "bees"
ants_dataset = MyData(root_dir, ants_lable_dir)
bees_dataset = MyData(root_dir, bees_lable_dir)