Please ask how to use python regular or shell regular to match the cookie value in the http package

GET /common_img/info/infomenu_08.gif HTTP/1.1
Host: baidu.com
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:43.0) Gecko/20100101 Firefox/43.0 Iceweasel/43.0.4
Accept: image/png,image/*;q=0.8,*/*;q=0.5
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://baidu.com/files/ie/commonEtc.css
Cookie: PHPSESSID=br5m3mehuvd1kf7hobl3ocdgh5; __utma=48899378.1896211893.1477411078.1477411078.1495464244.2; __utmc=48899378; __utmb=48899378.1.10.1495464244; __utmz=48899378.1495464244.2.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); __utmt=1
Connection: keep-alive
If-Modified-Since: Mon, 16 Dec 2013 04:12:09 GMT
If-None-Match: "7c0978-e63-3f7d840"

key=%D1

Need to match
Cookie: PHPSESSID=br5m3mehuvd1kf7hobl3ocdgh5; __utma=48899378.1896211893.1477411078.1477411078.1495464244.2; __utmc=48899378; __utmb=488 99378.1.10.1495464244; __utmz=48899378.1495464244.2.1.utmcsr=(direct)|utmccn= (direct)|utmcmd=(none); __utmt=1

Cookie([^;]*)(;|$)

I use the above paragraph to only match a small section
Cookie: PHPSESSID=br5m3mehuvd1kf7hobl3ocdgh5;
How to match all cookies
Thank you