獲取訪問狀態碼(比如200，404)

from urllib.request import Request, urlopen
from fake_useragent import UserAgent
from urllib.error import URLError

url = "https://passport.csdn.net/v1/register/pc/login/doLogin"

headers = {
    "User-Agent": UserAgent().chrome
}
try:
    req = Request(url, headers=headers)
    resp = urlopen(req)
    print(resp.read().decode())
    #以下是爲了區分訪問過慢或者根本就沒有
except URLError as e:
    if e.args == ():
        print(e.code)
    else:
        print(e.args[0].errno)
print("訪問完成")

'''
當你在上述域名後加上123後在運行
出現404
'''