豆瓣输入验证码登陆

首先要登陆豆瓣要必须获取验证码

1、获取验证码的图片链接下载到本地

req=r'<img id="captcha_image" src="(.*?)" alt="captcha" class="captcha_image"/>'
yanzhenma=re.findall(req,html.text,re.S)

2、手动输入验证码添加到data中

x=input('请输入验证码:')
data['captcha-solution']=x
data['captcha-id']=captcha_id[0]

3、代码演示

#!/usr/bin/python3
# -*- coding: utf-8 -*-
# @Time    : 2018/3/15 20:20
# @Author  : tomorrowli
import requests
import re
import os
import time
import random
from hashlib import md5
def geturl():
    time.sleep(random.randint(2,5))
    url='https://www.douban.com/accounts/login'
    headers={
        'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36'
    }
    data={
        'source':'index_nav',
        'form_email':'用户名',
        'form_password':'密码',
    }
    html=requests.get(url,headers=headers)
    #print(html.text)
    req=r'<img id="captcha_image" src="(.*?)" alt="captcha" class="captcha_image"/>'
    captcha = r'<input type="hidden" name="captcha-id" value="(.*?)"/>'
    yanzhenma=re.findall(req,html.text,re.S)
    if yanzhenma:
        captcha_id = re.findall(captcha,html.text,re.S)
        html=requests.get(yanzhenma[0])
        #可以采用MD5算法给图片随机取一个名字
        #md5(html.content)
        file_path = '{0}/{1}.{2}'.format(os.getcwd(), md5(html.content).hexdigest(), 'jpg')
        if not os.path.exists(file_path):
            with open(file_path, 'wb') as f:
                f.write(html.content)
                f.close()
        x=input('请输入验证码:')
        data['captcha-solution']=x
        data['captcha-id']=captcha_id[0]
        html = requests.post(url , data=data , headers=headers)
        print(html.status_code)
        print('登陆成功')
    else:
        html=requests.post(url,data=data,headers=headers)
        print('登陆成功')

def main():
    geturl()
if __name__ == '__main__':
    main()

结果展示