import os

path1 = r"D:\Deep_Learning\SC_SfMLearner\esophagus\dump\train.txt"
path2 = r"D:\Deep_Learning\SC_SfMLearner\esophagus\dump"

with open(path1, "r") as f:
    lines = f.readlines()
    for line in lines:
        element = line.replace('\n', '').split(' ')
        img_path = os.path.join(path2, element[0], element[1] + '.jpg')
        if not os.path.exists(img_path):
            print(img_path)