cookie 转dict
from http.cookies import SimpleCookie
rawdata = """
JSESSIONID=867C9C59CA63A01545CAD001334E6CDB; Hm_lvt_62d92d99f7c1e7a31a11759de376479f=1560419858,1560428313,1560429324,1560429869; ymtinfo=eyJ1aWQiOiIzODU2MzA0IiwicmVzb3VyY2UiOiIiLCJhcHBfbmFtZSI6IiIsImV4dF92ZXJzaW9uIjoiMSJ9; _pk_ref.3.a