# -*- coding: utf-8 -*- """ Created on Mon May 21 10:38:42 2018 @author: MinSoo """ # fr: file to read fr = open('C:/Users/misol/OneDrive/바탕 화면/Car.txt', 'r') # fw: file to write fw = open('C:/Users/misol/OneDrive/바탕 화면/Car_red.txt', 'w') # write the first line of fr on fw. line = fr.readline() fw.write(line) i = 0 # reduce to 1/n n = 1000 while True: line = fr.readline() if not line: break if i%n == 0: fw.write(line) i = i + 1 fr.close() fw.close()