因此，我尝试发出POST请求，但出现404错误。当我在浏览器中点击链接时，它的加载就很好了，但是当我为POST响应打印文本时，我得到的只是一个404页。
我尝试使用标头，并尝试使用“身份验证令牌”
atc = requests.post('https://www.saintalfred.com/cart/add.js', data = cart)
print(atc.text)
atc.cookies.get_dict()
r = requests.post("https://www.saintalfred.com/checkout", data=params, timeout = 20, cookies = atc.cookies)
print(r.text)
html = r.text
r.cookies.get_dict()
checkouttoken = re.search('DF_CHECKOUT_TOKEN = "(.*?)"', html)
authenticityToken = re.search('authenticity_token" value="(.*?)"',html)
print(checkouttoken.group(1))
print(authenticityToken.group(1))
aaaaa = checkouttoken.group(1).split('{fun')
aaaaaa = ''.join(aaaaa)
print(aaaaaa)
urlthing = "https://www.saintalfred.com/2681785/checkouts/" + aaaaaa + '?_method=patch&authenticity_token=' + authenticityToken.group(1)
print(urlthing)
headers = {'User Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3'}
z = requests.post(urlthing, data=params, timeout = 20, headers = headers, cookies = r.cookies)
print(z.text)
预期：不是404
实际：404页。