Write header Repeating

gistfile1.txt

#!/usr/bin/python -tt
from bs4 import BeautifulSoup
import urllib.request
import time
from time import sleep
from random import randint
#import urlparse

timestr = time.strftime("%m-%d-%Y_%H_%M_%S")
# inlinetime = time.strftime("%-m/%d/%Y")
inlinetime = time.strftime('%m/%d/%Y').lstrip("0").replace(" 0", " ")
timestrfolder = time.strftime("%m-%d-%Y")

file = open('/exp_list100_' + timestr + '.html', encoding='utf-8', mode='a+')

with open('/exp_list100_' + timestr + '.html', encoding='utf-8', mode='a+') as file_1, open('/pages/header.html', 'r') as file_2:
    for line in file_2:
        file_1.write(line)
        print('Write Header.html')
        sleep(1)