User-Agent随机函数封装（浏览器版本）

以下代码将常用的浏览器版本进行了随机处理，使用随机数生成版本号。混淆设备验证

> 仅限于电脑浏览器版本！移动设备后续更新～

def get_ua(self):
    first_num = random.randint(55, 62)
    third_num = random.randint(0, 3200)
    fourth_num = random.randint(0, 140)
    os_type = [
        '(Windows NT 6.1; WOW64)', '(Windows NT 10.0; WOW64)', '(X11; Linux x86_64)',
        '(Macintosh; Intel Mac OS X 10_12_6)'
    ]
    chrome_version = 'Chrome/{}.0.{}.{}'.format(first_num, third_num, fourth_num)

    ua = ' '.join(['Mozilla/5.0', random.choice(os_type), 'AppleWebKit/537.36',
                   '(KHTML, like Gecko)', chrome_version, 'Safari/537.36']
                  )
    # UserA = {"User-Agent": ua}
    return ua