参考文章：https://www.jb51.net/article/196966.htm

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【1】利用selenium+phantomjs无界面浏览器的形式访问网站，再获取cookie值：
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from selenium import webdriver
 
driver=webdriver.PhantomJS()
url="https://et.xiamenair.com/xiamenair/book/findFlights.action?lang=zh&tripType=0&queryFlightInfo=XMN,PEK,2018-01-15"
driver.get(url)
# 获取cookie列表
cookie_list=driver.get_cookies()
# 格式化打印cookie
for cookie in cookie_list:
  cookie_dict[cookie['name']]=cookie['value']

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【2】利用cookielib库获取：：
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import cookielib
import urllib2
Url = "https://et.xiamenair.com/xiamenair/book/findFlights.action?lang=zh&tripType=0&queryFlightInfo=XMN,PEK,2018-01-15"
cj = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
urllib2.install_opener(opener)
resp = urllib2.urlopen(Url)
for index, cookie in enumerate(cj):
  print '[',index, ']',cookie

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【3】自己测试的：：
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# 请求url
Res_kuaidi111=requests.get('https://www.111111111.com')
# 获取 Cookies
requests.utils.dict_from_cookiejar(Res_kuaidi100.cookies)
print("获取cookies：",requests.utils.dict_from_cookiejar(Res_kuaidi100.cookies))