#!/usr/bin/env python3
# -*- coding: utf-8 -*-
‘‘‘
Required
- requests (必須)
- pillow (可選)
Info
- author : "xchaoinfo"
- email  : "[email protected]"
- date   : "2016.2.4"
Update
- name   : "wangmengcn"
- email  : "[email protected]"
- date   : "2016.4.21"
‘‘‘
import requests
try:
    import cookielib
except
 
:
    import http.cookiejar as cookielib
import re
import time
import os.path
try:
    from PIL import Image
except:
    pass


# 構造 Request headers
agent = ‘Mozilla/5.0 (Windows NT 5.1; rv:33.0) Gecko/20100101 Firefox/33.0‘
headers = {
    ‘User-Agent‘: agent
}

# 使用登錄cookie信息
session = requests.session()
session.cookies 
 
= cookielib.LWPCookieJar(filename=‘cookies‘)
try:
    session.cookies.load(ignore_discard=True)
except:
    print("Cookie 未能加載")


def get_xsrf():
    ‘‘‘_xsrf 是一個動態變化的參數‘‘‘
    index_url = ‘http://www.zhihu.com‘
    # 獲取登錄時需要用到的_xsrf
    index_page = session.get(index_url, headers=headers)
    html = index_page.text
    pattern 
 
= r‘name="_xsrf" value="(.*?)"‘
    # 這裏的_xsrf 返回的是一個list
    _xsrf = re.findall(pattern, html)
    return _xsrf[0]


# 獲取驗證碼
def get_captcha():
    t = str(int(time.time()*1000))
    captcha_url = ‘http://www.zhihu.com/captcha.gif?r=‘ + t + "&type=login"
    r = session.get(captcha_url, headers=headers)
    with open(‘captcha.jpg‘, ‘wb‘) as f:
        f.write(r.content)
        f.close()
    # 用pillow 的 Image 顯示驗證碼
    # 如果沒有安裝 pillow 到源代碼所在的目錄去找到驗證碼然後手動輸入
    try:
        im = Image.open(‘captcha.jpg‘)
        im.show()
        im.close()
    except:
        print(u‘請到 %s 目錄找到captcha.jpg 手動輸入‘ % os.path.abspath(‘captcha.jpg‘))
    captcha = input("please input the captcha\n>")
    return captcha


def isLogin():
    # 通過查看用戶個人信息來判斷是否已經登錄
    url = "https://www.zhihu.com/settings/profile"
    login_code = session.get(url,allow_redirects=False).status_code
    if int(x=login_code) == 200:
        return True
    else:
        return False



def login(secret, account):
    # 通過輸入的用戶名判斷是否是手機號
    if re.match(r"^1\d{10}$", account):
        print("手機號登錄 \n")
        post_url = ‘http://www.zhihu.com/login/phone_num‘
        postdata = {
            ‘_xsrf‘: get_xsrf(),
            ‘password‘: secret,
            ‘remember_me‘: ‘true‘,
            ‘phone_num‘: account,
        }
    else:
        print("郵箱登錄 \n")
        post_url = ‘http://www.zhihu.com/login/email‘
        postdata = {
            ‘_xsrf‘: get_xsrf(),
            ‘password‘: secret,
            ‘remember_me‘: ‘true‘,
            ‘email‘: account,
        }
    try:
        # 不需要驗證碼直接登錄成功
        login_page = session.post(post_url, data=postdata, headers=headers)
        login_code = login_page.text
        print(login_page.status)
        print(login_code)
    except:
        # 需要輸入驗證碼後才能登錄成功
        postdata["captcha"] = get_captcha()
        login_page = session.post(post_url, data=postdata, headers=headers)
        login_code = eval(login_page.text)
        print(login_code[‘msg‘])
    session.cookies.save()

try:
    input = raw_input
except:
    pass


if __name__ == ‘__main__‘:
    if isLogin():
        print(‘您已經登錄‘)
    else:
        account = input(‘請輸入你的用戶名\n>  ‘)
        secret = input("請輸入你的密碼\n>  ")
        login(secret, account)

python 模擬知乎登錄，包含驗證碼（轉）