python 将验证码保存到本地 读取 写入

 #验证码
 #读取验证码网址、打开本地路径、写入、输入验证码
 downpicture = urllib.request.urlopen(SecretCodeUrl).read()
 local = open(address, 'wb')
 local.write(downpicture)
 local.close()
 print(u"请从桌面寻找你的验证码")
 print (u"请输入验证码：")
 SecretCode = input()
 driver.find_element_by_id('txtSecretCode').send_keys(SecretCode)