我正在编写一个脚本，该脚本登录到多个相同类型的论坛（phpBB）。当我遍历URL列表时，大多数URL仅给我我想要来自不同用户代理的响应。
其余的URL通常给出200的响应代码，但返回如下所示：
<div class="error">The submitted form was invalid. Try submitting again.</div> <dl>
我已经测试了用户代理，其中显示的网址注释如下：
def auth_check():
errorlist = []
windowsnt_usera = []
with open('other_phpBB_still_errors5.txt', "r") as f:
for item in f:
try:
item2 = item.strip()
#headers = {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.75.14 (KHTML, like Gecko) Version/7.0.3 Safari/7046A194A'}
#headers = {'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0'}
#headers = {'User-Agent': 'Mozilla Firefox Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:53.0) Gecko/20100101 Firefox/53.0'}
#headers = {'User-Agent': 'Mozilla/5.0 (Linux; Android 7.0; BLL-L22 Build/HUAWEIBLL-L22)'
# ' AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.91 Mobile Safari/537.36'}
#headers = {'User-Agent': 'Mozilla/5.0 (iPad; CPU OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148'}
headers = {'User-Agent': 'Opera/9.80 (Windows NT 6.1; WOW64) Presto/2.12.388 Version/12.18'}
s = requests.Session()
r = s.get(item2, headers=headers)
soup = BeautifulSoup(r.text, "html.parser")
creation = soup.find('input', {'name': 'creation_time'})['value']
token = soup.find('input', {'name': 'form_token'})['value']
payload = {'username': 'georgejetson', 'password': 'Msafsdfwe23', 'login': 'Login',
'redirect': './index.php?', 'creation_time': creation, 'form_token': token}
print(token, creation)
print(s.cookies)
#print(r.status_code, soup)
response = s.post(item2, headers=headers, data=payload)
soup2 = BeautifulSoup(response.text, "html.parser")
print(response.status_code)
link = soup2.find('a', href=True, text='Board Administrator')
print(link)
我已经列出了哪些URL与哪些用户代理一起工作，并且我计划分别遍历每个列表。我正在尝试尽可能提高效率。
是否有更好的方法来遍历POST请求而不更改用户代理？