Функция для проверки веб страницы на код ответа сервера

from bs4 import BeautifulSoup
import requests as req
import time
 
def check(url1):
  user_agent = ('user-agent=Mozilla/5.0 (Windows NT 10.0; WOW64)'
                ' AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36")' )
  time.sleep(5)
  resp = req.get(url1, headers= user_agent)
  if 200 <= resp.status_code >= 299:
      print('OK!')
      return 0
  else:
       print(resp.status_code)
  return check(url1)
 
 
adress="https://astrovedic.ucoz.ru/forum/95"
check(adress)
resp = req.get(adress)
soup = BeautifulSoup(resp.text, 'lxml')

Traceback (most recent call last):
  File "F:/Program Files/python/питон/парсинг/парсинг статьи Финогеева.py", line 19, in <module>
    check(adress)
  File "F:/Program Files/python/питон/парсинг/парсинг статьи Финогеева.py", line 9, in check
    resp = req.get(url1, headers= user_agent)
  File "C:\Users\egor\AppData\Local\Programs\Python\Python38-32\lib\site-packages\requests\api.py", line 75, in get
    return request('get', url, params=params, **kwargs)
  File "C:\Users\egor\AppData\Local\Programs\Python\Python38-32\lib\site-packages\requests\api.py", line 61, in request
    return session.request(method=method, url=url, **kwargs)
  File "C:\Users\egor\AppData\Local\Programs\Python\Python38-32\lib\site-packages\requests\sessions.py", line 528, in request
    prep = self.prepare_request(req)
  File "C:\Users\egor\AppData\Local\Programs\Python\Python38-32\lib\site-packages\requests\sessions.py", line 456, in prepare_request
    p.prepare(
  File "C:\Users\egor\AppData\Local\Programs\Python\Python38-32\lib\site-packages\requests\models.py", line 317, in prepare
    self.prepare_headers(headers)
  File "C:\Users\egor\AppData\Local\Programs\Python\Python38-32\lib\site-packages\requests\models.py", line 449, in prepare_headers
    for header in headers.items():
AttributeError: 'str' object has no attribute 'items'

articles={}
adress="https://astrovedic.ucoz.ru/forum/95"
# check(adress)
resp = req.get(adress)
soup = BeautifulSoup(resp.text, 'lxml')
 
resp = req.get(adress)
soup = BeautifulSoup(resp.text, 'lxml')
res=soup.findAll("tr")
res =res[29:37]
for i in res:
  try:
   if i != None:
       i= i.find(class_= "threadLink")
       name=str(i.text).rstrip()
       ref =adress+str(i.get('href')).rstrip()
       articles[name]=ref
  except:
     pass
 
for i in range(2,51):
  adress="https://astrovedic.ucoz.ru/forum/95-0-{0}".format(i)
  resp = req.get(adress)
  soup = BeautifulSoup(resp.text, 'lxml')
  res=soup.findAll("tr")
  for i in res:
   try:
    i2= i.find(class_= "threadLink")
    name=str(i2.text).rstrip()
    ref =adress+str(i2.get('href')).rstrip()
    print(name, ref, sep=" ")
    articles[name]=ref
   except:
     pass
 
keys1=list(articles.keys())
keys1.sort()
for i, key in enumerate(keys1,start=1):
  res_str=str(i)+". "+str(key)+" "+str(articles[key])+"\n\n"
  print(res_str)
  with open('статьи.doc','a') as f:
    f.write(res_str)