目标网站：知乎
Pyrhon版本：3.6
agent = 'Mozilla/5.0 (Windows NT 6.1; W…) Gecko/20100101 Firefox/59.0'
header = {
'HOST': 'www.zhihu.com',
'Referer': 'https://www.zhihu.com',
'User-Agent': agent
}
response = requests.get('https://www.zhihu.com', headers=header)
报错内容：
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Anaconda3\lib\site-packages\requests\api.py", line 72, in get
return request('get', url, params=params, **kwargs)
File "C:\Anaconda3\lib\site-packages\requests\api.py", line 58, in request
return session.request(method=method, url=url, **kwargs)
File "C:\Anaconda3\lib\site-packages\requests\sessions.py", line 518, in request
resp = self.send(prep, **send_kwargs)
File "C:\Anaconda3\lib\site-packages\requests\sessions.py", line 639, in send
r = adapter.send(request, **kwargs)
File "C:\Anaconda3\lib\site-packages\requests\adapters.py", line 438, in send
timeout=timeout
File "C:\Anaconda3\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 600, in urlopen
chunked=chunked)
File "C:\Anaconda3\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 356, in _make_request
conn.request(method, url, **httplib_request_kw)
File "C:\Anaconda3\lib\http\client.py", line 1239, in request
self._send_request(method, url, body, headers, encode_chunked)
File "C:\Anaconda3\lib\http\client.py", line 1280, in _send_request
self.putheader(hdr, value)
File "C:\Anaconda3\lib\http\client.py", line 1212, in putheader
values[i] = one_value.encode('latin-1')
UnicodeEncodeError: 'latin-1' codec can't encode character '\u2026' in position 30: ordinal not in range(256)
\u2026好像是空格，看了下源码，好像是空格要转latin-1这种编码失败了，
我上面有空格的是agent，要用来伪装浏览器，这可怎么办，
而且在我看的那个知乎爬虫视频中，他也是有空格的，却不出错，这是我的环境有问题吗，
请大佬们能指点一下
