requests库的使用注意地方

2019-10-05

1、设置cookie

from requests import Session
from requests.cookies import RequestsCookieJar

session = Session()
res = session.post('http://data.huaxuejia.cn/search.php',
files={'search_keyword': (None, casnum)})

cookie_jar = RequestsCookieJar()
resd = requests.utils.dict_from_cookiejar(res.cookies)
cookie_jar.set([key for key in resd][0], resd[[key for key in resd][0]], domain='.huaxuejia.cn')

res = session.post('http://data.huaxuejia.cn/search.php', files={'search_keyword': (None, casnum)}, cookies=cookie_jar)

2、post提交表单

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3

from requests import Session

res = session.post(url, files={key: (None, value)})

3、错误（too many open files）:

1	OpenSSL.SSL.Error: [('system library', 'fopen', 'Too many open files'), ('BIO routines', 'BIO_new_file', 'system lib'), ('x509 cetificate routines', 'X509_load_cert_crl_file', 'system lib')]

解决：

import requests

session = requests.Session()
res = session.get('http://www.baidu.com')
session.close()
del(session)

jsonContent: meta: false pages: false posts: title: true date: true path: true text: false raw: false content: false slug: false updated: false comments: false link: false permalink: false excerpt: false categories: false tags: true