python selenium 下载滑块验证码

#_save_url  保存路径
def image_cj(driver, _save_url):
    try:
        _file_name = random.randint(0, 100000)
        _file_url_drop = _save_url + str(_file_name) + '背景.png'  # 滑块背景存储地址

        _file_url = _save_url + str(_file_name) + '验证.png'  # 滑块存储地址

        _pic_url_drop = driver.find_element_by_xpath('//*[@id="slideBkg"]')  # 定位滑块背景图元素

        mutex.acquire()
        get_pic(_pic_url_drop.get_attribute('src'), _file_url_drop)  # 根据滑块背景图的url下载图片
        time.sleep(1)
        mutex.release()
        _pic_url = driver.find_element_by_xpath('//*[@id="slideBlock"]')  # 定位滑块元素

        mutex.acquire()
        get_pic(_pic_url.get_attribute('src'), _file_url)  # 根据滑块的url下载图片
        time.sleep(1)
        mutex.release()
        file_path = []  # 定义滑块返回图片存储地址

        file_path.append(_file_url)

        file_path.append(_file_url_drop)
        return file_path
    except Exception as e:
        print('错误 ：', e)
        return str(_file_url)

#下载图片
def get_pic(url, path):
    response = requests.get(url)
    # 获取的文本实际上是图片的二进制文本
    img = response.content
    # 将他拷贝到本地文件 w 写  b 二进制  wb代表写入二进制文本
    with open(path, 'wb') as f:
        f.write(img)