如何使用urllib2模块python2.7解决此错误

Question

我试图通过循环传递多个IP地址来收集来自API的响应。

import urllib2
z = open("ipaddr.txt","r")

for i in z:
    apr = urllib2.Request('https://someurl;ip='+i+';req=profile')
    f =  urllib2.urlopen(apr)
    the_page = f.read()
    print the_page

通过运行上述代码会出现以下错误

Traceback (most recent call last):
  File "open.py", line 10, in <module>
    f =  urllib2.urlopen(apr)
  File "/usr/lib64/python2.6/urllib2.py", line 126, in urlopen
    return _opener.open(url, data, timeout)
  File "/usr/lib64/python2.6/urllib2.py", line 389, in open
    req = meth(req)
  File "/usr/lib64/python2.6/urllib2.py", line 1096, in do_request_
    raise URLError('no host given')