I get the error "urllib.error.HTTPError: HTTP Error 403: Forbidden" when scraping certain pages, and understand that adding something like hdr = {"User-Agent': 'Mozilla/5.0"} to the header is the solution for this.

However I can't make it work when the URL's I'm trying to scrape is in a separate source file. How/where can I add the User-Agent to the code below?

from bs4 import BeautifulSoup
import urllib.request as urllib2
import timelist_open = open("source-urls.txt")
read_list = list_open.read()
line_in_list = read_list.split("\n")i = 0
for url in line_in_list:soup = BeautifulSoup(urllib2.urlopen(url).read(), 'html.parser')name = soup.find(attrs={'class': "name"})description = soup.find(attrs={'class': "description"})for text in description:print(name.get_text(), ';', description.get_text())
#        time.sleep(5)i += 1

You can achieve same using requests

import requests
hdrs = {'User-Agent': 'Mozilla / 5.0 (X11 Linux x86_64) AppleWebKit / 537.36 (KHTML, like Gecko) Chrome / 52.0.2743.116 Safari / 537.36'}    
for url in line_in_list:resp = requests.get(url, headers=hdrs)soup = BeautifulSoup(resp.content, 'html.parser')name = soup.find(attrs={'class': "name"})description = soup.find(attrs={'class': "description"})for text in description:print(name.get_text(), ';', description.get_text())
#        time.sleep(5)i += 1

Hope it helps!