with open("./Kather_test.csv") as f: data = f.readlines() labels = [] full = [] img_base = "/Users/akshay/Downloads/CRC-VAL-HE-7K" for line in data[1:]: _, fn, lb, cp = line.strip().split(",") labels.append(lb) full.append((cp, " ".join(cp.split()[5:])[:-1])) print(f"{img_base}/{lb}/{fn}/", lb) labels = set(labels) full = set(full) print(labels) print(full)