Write CSV file for a dataset

 import numpy as np
 import cv2 as cv2
 import os
 import csv 

 dataste_path = 'datasets/pascal-parts/pascal/data'
 dirs= os.listdir(dataste_path)
 with open("datasets/pascal-parts/pascal/test.csv","w") as csvfile:
     writer = csv.writer(csvfile)
     writer.writerow(["source_image","target_image"])
     for direc in dirs:
         if not direc.startswith('.'):
             print('')
             file_list = list()
             files = os.listdir(os.path.join(dataste_path,direc))
             for file in files:
                 if file.endswith('.jpg') and not file.startswith('.') and file[0].isdigit():
                     file_name = os.path.join('pascal/data',direc,file)
                     file_list.append(file_name)
             for i in range(len(file_list)):
                 for j in range(len(file_list)):
                     if(i == j):
                         continue
                     else:
                         writer.writerow([file_list[i],file_list[j]])
         else: print('')