| req, cookie[, value, attributes]) | 
This function will also set "Cache-Control: no-cache="set-cookie"" header to inform caches that the cookie value should not be cached.
Here is one way to use this function:
c = Cookie.Cookie('spam', 'eggs', expires=time.time()+300)
Cookie.add_cookie(req, c)
Cookie.add_cookie(req, 'spam', 'eggs', expires=time.time()+300)
| req [, Class, data]) | 
Cookie. Data
  can be any number of keyword arguments which, will be passed to
  parse() (This is useful for signedCookie and
  MarshalCookie which require secret as an additional
  argument to parse). The set of cookies found is returned as
  a dictionary.
| req, name [, Class, data]) | 
Cookie. Data can be any number of keyword
  arguments which, will be passed to parse() (This is useful for
  signedCookie and MarshalCookie which require
  secret as an additional argument to parse). The cookie
  if found is returned, otherwise None is returned.