Problem with Python FileCookieJar.save ()

Question

I have a problem trying to save cookies to a file using the FileCookieJar save method. Here is my code:

 #!/usr/bin/python import httplib, cookielib, urllib2, json, time from datetime import date class FoN: def __init__(self): self.cookiefile = "cookies.txt" self.cj = cookielib.FileCookieJar(self.cookiefile) def login (self, login, password): js = json.JSONEncoder().encode({"login":login,"password":password}) req=urllib2.Request("http://www.example.com/user/login", js) res=urllib2.urlopen(req) self.cj.extract_cookies(res,req) self.cj.save(self.cookiefile, ignore_discard=True) f.write ("Login: "+login+", result: "+str(res.read().count("true"))+"\n") time.sleep(2) return res 

Thus, it fails when calling self.cj.save(self.cookiefile, ignore_discard=True) raise NotImplementedError , which matches the documentation. But my question is, how do I save cookies to a file? I even tried to include the code in try , but that didn't help.

Answer 1

The FileCookieJar base FileCookieJar not implement .save To get the save, you must use one of the subclasses, for example MozillaCookieJar or LWPCookieJar .

Answer 2

I have an example code to demonstrate:

• auto cook cookies: cookie in memory
• automatic cookie handling: cookie in file
  • support for two formats:
    • LWP
    • Mozilla
  • two types of operations
    • save into file
    • load from file

the code:

 #!/usr/bin/python # -*- coding: utf-8 -*- """ Function: 【整理】Python中Cookie的处理：自动处理Cookie，保存为Cookie文件，从文件载入Cookie http://www.crifan.com/python_auto_handle_cookie_and_save_to_from_cookie_file Version: 2013-01-15 Author: Crifan Contact: admin (at) crifan.com """ import os; import cookielib; import urllib2; def pythonAutoHandleCookie(): """ Demo how to auto handle cookie in Python cookies in memory cookies in file: save cookie to file LWP format Mozilla format load cookie from file """ print "1. Demo how to auto handle cookie (in memory)"; cookieJarInMemory = cookielib.CookieJar(); opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookieJarInMemory)); urllib2.install_opener(opener); print "after init, cookieJarInMemory=",cookieJarInMemory; #after init, cookieJarInMemory= #!!! following urllib2 will auto handle cookies demoUrl = "http://www.google.com/"; response = urllib2.urlopen(demoUrl); #here, we already got response cookies print "after urllib2.urlopen, cookieJarInMemory=",cookieJarInMemory; #after urllib2.urlopen, cookieJarInMemory= , , ]> print "2. Demo how to auto handle cookie in file, LWP format"; cookieFilenameLWP = "localCookiesLWP.txt"; cookieJarFileLWP = cookielib.LWPCookieJar(cookieFilenameLWP); #will create (and save to) new cookie file cookieJarFileLWP.save(); opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookieJarFileLWP)); urllib2.install_opener(opener); #!!! following urllib2 will auto handle cookies demoUrl = "http://www.google.com/"; response = urllib2.urlopen(demoUrl); #update cookies, save cookies into file cookieJarFileLWP.save(); #for demo, print cookies in file print "LWP cookies:"; print open(cookieFilenameLWP).read(os.path.getsize(cookieFilenameLWP)); # #LWP-Cookies-2.0 # Set-Cookie3: PREF="ID=34c1415b570a93ae:FF=0:NW=1:TM=1358236121:LM=1358236121:S=gEVVojW4x37ht5n-"; path="/"; domain=".google.com"; path_spec; domain_dot; expires="2015-01-15 07:48:41Z"; version=0 # Set-Cookie3: NID="67=JI_uEwUm5GDrQ_vCwAp2z_YGU7MdLm5CLMa4CNLF7RQuTDMzrrk1EjRddGcnpoFbht81LaV9spxZQQInf0mPS6lDrvcRqBBL5NOTmy8SwOzA6HWC3iTIo4-o3fO1Udkv"; path="/"; domain=".google.com.hk"; path_spec; domain_dot; expires="2013-07-17 07:48:41Z"; HttpOnly=None; version=0 # Set-Cookie3: PREF="ID=8f7e4efca89bdb1b:U=f85a4afa4db021aa:FF=2:LD=zh-CN:NW=1:TM=1358236121:LM=1358236121:S=2WR59hDWutdnUJtF"; path="/"; domain=".google.com.hk"; path_spec; domain_dot; expires="2015-01-15 07:48:41Z"; version=0 print "3. Demo how to auto handle cookie in file, Mozilla Format"; cookieFilenameMozilla = "localCookiesMozilla.txt"; cookieJarFileMozilla = cookielib.MozillaCookieJar(cookieFilenameMozilla); #will create (and save to) new cookie file cookieJarFileMozilla.save(); opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookieJarFileMozilla)); urllib2.install_opener(opener); #!!! following urllib2 will auto handle cookies demoUrl = "http://www.google.com/"; response = urllib2.urlopen(demoUrl); #update cookies, save cookies into file cookieJarFileMozilla.save(); #for demo, print cookies in file print "Mozilla cookies:"; print open(cookieFilenameMozilla).read(os.path.getsize(cookieFilenameMozilla)); # # Netscape HTTP Cookie File # # http://www.netscape.com/newsref/std/cookie_spec.html # # This is a generated file! Do not edit. # .google.com TRUE / FALSE 1421308121 PREF ID=0e05040dd979207c:FF=0:NW=1:TM=1358236121:LM=1358236121:S=jcFid2XgXMIhPUPl # .google.com.hk TRUE / FALSE 1374047321 NID 67=klMI_Z5ZPWDjUYrWSUHIE_kYI77_ziJaL0kWRoUGThagME86LKY7H-MNa2wAMI_GklIwYcD8t82qPinxzLd4GLDbmWT0OVLCXhRj0wQDC57dTNAsTs4lhVR7Yjvj2tfn # .google.com.hk TRUE / FALSE 1421308121 PREF ID=028f8b736db06a9a:U=6ba6d080847c8de6:FF=2:LD=zh-CN:NW=1:TM=1358236121:LM=1358236121:S=_1BcC5v3G0ZojVz8 print "4. read cookies from file"; parseAndSavedCookieFile = "parsedAndSavedCookies.txt" parsedCookieJarFile = cookielib.MozillaCookieJar(parseAndSavedCookieFile); #parsedCookieJarFile = cookielib.MozillaCookieJar(cookieFilenameMozilla); print parsedCookieJarFile; # parsedCookieJarFile.load(cookieFilenameMozilla); print parsedCookieJarFile; #, , ]> if __name__=="__main__": pythonAutoHandleCookie();