循环通过有效载荷 Python

Question

我连接到一个网站，但需要使用不同的用户名和密码登录 4 次。

无论如何我可以通过在有效负载中循环访问用户名和密码来做到这一点。

这是我第一次这样做，我不确定如何去做。 如果我只发布一个用户名和密码，代码就可以正常工作。

我正在使用 Python 2.7 和 BeautifulSoup 和请求。

这是我的代码。

import requests
import zipfile, StringIO
from bs4 import BeautifulSoup

# Here were add the login details to be submitted to the login form.
payload = [
{'USERNAME': 'xxxxxx','PASSWORD': 'xxxxxx','option': 'login'},
{'USERNAME': 'xxxxxx','PASSWORD': 'xxxxxxx','option': 'login'},
{'USERNAME': 'xxxxx','PASSWORD': 'xxxxx','option': 'login'},
{'USERNAME': 'xxxxxx','PASSWORD': 'xxxxxx','option': 'login'},
]
#Possibly need headers later.
headers = {'user-agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36'}
base_url = "https://service.rl360.com/scripts/customer.cgi/SC/servicing/"

with requests.Session() as s:
        p = s.post('https://service.rl360.com/scripts/customer.cgi?option=login', data=payload)

        # Get the download page to scrape.
        r = s.get('https://service.rl360.com/scripts/customer.cgi/SC/servicing/downloads.php?Folder=DataDownloads&SortField=ExpiryDays&SortOrder=Ascending', stream=True)
        content = r.text
        soup = BeautifulSoup(content, 'lxml')
        #Now i get the most recent download URL.
        download_url = soup.find_all("a", {'class':'tabletd'})[-1]['href']
        #now we join the base url with the download url.
        download_docs = s.get(base_url + download_url, stream=True)
        print "Checking Content"
        content_type = download_docs.headers['content-type']
        print content_type
        print "Checking Filename"
        content_name = download_docs.headers['content-disposition']
        print content_name
        print "Checking Download Size"
        content_size = download_docs.headers['content-length']
        print content_size

        #This is where we extract and download the specified xml files.
        z = zipfile.ZipFile(StringIO.StringIO(download_docs.content))
        print "---------------------------------"
        print "Downloading........."
        #Now we save the files to the specified location.
        z.extractall('C:\Temp')
        print "Download Complete"

Answer 1

只需使用 for 循环。如果文件将被覆盖，您可能需要调整下载目录。

payloads = [
{'USERNAME': 'xxxxxx1','PASSWORD': 'xxxxxx','option': 'login'},
{'USERNAME': 'xxxxxx2','PASSWORD': 'xxxxxxx','option': 'login'},
{'USERNAME': 'xxxxx3','PASSWORD': 'xxxxx','option': 'login'},
{'USERNAME': 'xxxxxx4','PASSWORD': 'xxxxxx','option': 'login'},
]

....

for payload in payloads:
    with requests.Session() as s:
        p = s.post('https://service.rl360.com/scripts/customer.cgi?option=login', data=payload)
        ...