python+win32+ie浏览器操作 TypeError: getElementById() takes exactly 1 argument (2 given)

使用body操作

# -*- coding:UTF- -*-

import win32com.client
from time import sleep

second=win32com.client.DispatchEx("InternetExplorer.Application")
second.Navigate('http://passport.cnblogs.com/login.aspx')
second.Visible=
while second.Busy:
    sleep()

doc=second.Document
body=doc.body
#doc.getElementById("login")

for i in body.getElementsByTagName("input"):
    if i.id=='input1':
        i.value='
    if i.id=='input2':
        i.value='59459540a'

for i in body.getElementsByTagName("input"):
    if i.id=='signin':
        i.click()
        print('click')