登陸的唯一困難在於驗證碼的識別，此處使用第三方平臺超級鷹進行驗證碼識別。

from selenium import webdriver
import time
from PIL import Image
from selenium.webdriver import ActionChains
import requests
from hashlib import md5

from selenium.webdriver import Chrome
from selenium.webdriver import ChromeOptions

class Chaojiying_Client(object):
    
 
"""超級鷹原始碼"""

    def __init__(self, username, password, soft_id):
        self.username = username
        password = password.encode('utf8')
        self.password = md5(password).hexdigest()
        self.soft_id = soft_id
        self.base_params = {
            'user': self.username,
            
 
'pass2': self.password,
            'softid': self.soft_id,
        }
        self.headers = {
            'Connection': 'Keep-Alive',
            'User-Agent': 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0)',
        }

    def PostPic(self, im, codetype):
        """
        im: 圖片位元組
        codetype: 題目型別 參考 http://www.chaojiying.com/price.html
        
 
"""
        params = {
            'codetype': codetype,
        }
        params.update(self.base_params)
        files = {'userfile': ('ccc.jpg', im)}
        r = requests.post('http://upload.chaojiying.net/Upload/Processing.php', data=params, files=files,
                          headers=self.headers)
        return r.json()

    def ReportError(self, im_id):
        """
        im_id:報錯題目的圖片ID
        """
        params = {
            'id': im_id,
        }
        params.update(self.base_params)
        r = requests.post('http://upload.chaojiying.net/Upload/ReportError.php', data=params, headers=self.headers)
        return r.json()

# 檢測規避
option = ChromeOptions()
option.add_experimental_option('excludeSwitches', ['enable-automation'])
driver = Chrome(options=option)

bro = webdriver.Chrome(executable_path='./chromedriver.exe')
# 最大化螢幕
bro.maximize_window()

# 傳送請求
bro.get('https://kyfw.12306.cn/otn/resources/login.html')

# 找到賬號的登陸的標籤
btn = bro.find_elements_by_xpath('/html/body/div[2]/div[2]/ul/li[2]/a')[0]
btn.click()
time.sleep(2)

# 將當前頁面截圖生成圖片
bro.save_screenshot('12306.png')

# 定位到要擷取的圖片
pic = bro.find_element_by_xpath('/html/body/div[2]/div[2]/div[1]/div[2]/div[3]/div/div[4]/img')
# 得到當前圖片的左上角座標
location = pic.location
# 得到圖片的長和寬
size = pic.size
# 得到圖片左上角和右下角的座標 截圖準確度與電腦縮放佈局有關 當前為125%
rangle = (location['x'] * 1.25, location['y'] * 1.25, (location['x'] + size['width']) * 1.25,
          (location['y'] + size['height']) * 1.25)


# 儲存生成的驗證碼圖片
i = Image.open('./12306.png')
code_img_name = 'code.png'  # 裁剪檔案的檔名稱
frame = i.crop(rangle)  # 根據指定區域進行裁剪
frame.save(code_img_name)

# 利用超級鷹識別驗證碼
chaojiying = Chaojiying_Client('Mrterrific', 'WQ2017617sxy', '    905993')
im = open('./code.png', 'rb').read()
result = chaojiying.PostPic(im, 9004)['pic_str']
all_list = []

if '|' in result:
    # 多個結果
    print(result)
    ret_list = result.split('|')  # 148,102|236,203
    for ret in ret_list:
        # 將一組座標放入列表
        x_y = []
        x = ret.split(',')[0]
        y = ret.split(',')[0]
        x_y.append(x)
        x_y.append(y)
        all_list.append(x_y)
else:
    x_y = []
    x = result.split(',')[0]
    y = result.split(',')[0]
    x_y.append(x)
    x_y.append(y)
    all_list.append(x_y)

for ret in all_list:
    x = int(ret[0])
    y = int(ret[1])
    ActionChains(bro).move_to_element_with_offset(pic, x, y).click().perform()
    # 以圖片物件為參考系 將滑鼠移動到相對圖片x,y處 點選圖片
    time.sleep(0.5)

bro.find_element_by_id('J-userName').send_keys('xxxx')
bro.find_element_by_id('J-password').send_keys('ssss')
bro.find_element_by_id('J-login').click()
time.sleep(3)
bro.quit()