python的session方法使用记录

# encoding=utf8

'''
Python2环境下
'''

import requests



def main():
	session = requests.session()

	# requests.utils.dict_from_cookiejar方法可以将cookiejar对象转换成一个dict对象
	cookies = requests.utils.dict_from_cookiejar(session.cookies)
	print 'cookies: ', cookies
	# 结果:
	# cookies:  {}

	cook1 = {'a': '1', 'b': '2'}
	# requests.utils.cookiejar_from_dict方法可以将一个字典转换成cookiejar对象并添加到当前session的cookies中
	session.cookies = requests.utils.cookiejar_from_dict(cook1)
	cookies = requests.utils.dict_from_cookiejar(session.cookies)
	print 'cookies: ', cookies
	# 结果:
	# cookies:  {'a': '1', 'b': '2'}

	cook2 = {'c': '3'}
	# requests.utils.add_dict_to_cookiejar方法可以为当前的cookies添加新的cookie
	requests.utils.add_dict_to_cookiejar(session.cookies, cook2)
	cookies = requests.utils.dict_from_cookiejar(session.cookies)
	print 'cookies: ', cookies
	# 结果:
	# cookies:  {'a': '1', 'c': '3', 'b': '2'}

	verify = session.verify
	print 'verify: ', verify
	# 结果:
	# verify:  True

	# 取消请求验证，主要针对https请求
	session.verify = False
	verify = session.verify
	print 'verify: ', verify
	# 结果:
	# verify:  False

	headers = session.headers
	print 'headers: ', headers
	# 结果:
	# headers:  {'Connection': 'keep-alive', 'Accept-Encoding': 'gzip, deflate', 'Accept': '*/*', 'User-Agent': 'python-requests/2.12.5'}

	# 为session添加请求头
	session.headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64; rv:56.0) Gecko/20100101 Firefox/56.0'}
	headers = session.headers
	print 'headers: ', headers
	# 结果:
	# headers:  {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64; rv:56.0) Gecko/20100101 Firefox/56.0'}


if __name__ == '__main__':
	main()