AttributeError: 'NoneType' object has no attribute 'startswith'

最新推荐文章于 2024-07-30 10:28:28 发布

原创最新推荐文章于 2024-07-30 10:28:28 发布 · 1.1w 阅读

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博客内容提到了在使用Anaconda pip时遇到一个错误，具体表现为AttributeError: 'NoneType' object has no attribute 'startswith'。为了解决这个问题，博主提供了参考解决方案，包括查看Stack Overflow上的相关问题解答，并指导用户修改Windows注册表中的特定键值，删除ProxyEnable键并新建一个DWORD(32位)值。这个错误通常与网络设置或代理配置有关。

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anaconda pip 错误，返回 AttributeError: 'NoneType' object has no attribute 'startswith'

解决办法：

参见 https://stackoverflow.com/questions/46260169/python-locationvalueerror-no-host-specified

修改windows注册表

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings \ ProxyEnable

删除 ProxyEnable

新建DWORD(32位)值

(REG_DWORD 0x00000000(0))

Traceback (most recent call last):

File "C:\Anaconda\lib\site-packages\conda\exceptions.py", line 634, in conda_exception_handler
return_value = func(*args, **kwargs)
File "C:\Anaconda\lib\site-packages\conda\cli\main.py", line 140, in _main
exit_code = args.func(args, p)
File "C:\Anaconda\lib\site-packages\conda\cli\main_update.py", line 65, in execute
install(args, parser, 'update')
File "C:\Anaconda\lib\site-packages\conda\cli\install.py", line 228, in install
unknown=index_args['unknown'], prefix=prefix)
File "C:\Anaconda\lib\site-packages\conda\core\index.py", line 101, in get_index
index = fetch_index(channel_priority_map, use_cache=use_cache)
File "C:\Anaconda\lib\site-packages\conda\core\index.py", line 120, in fetch_index
repodatas = collect_all_repodata(use_cache, tasks)
File "C:\Anaconda\lib\site-packages\conda\core\repodata.py", line 74, in collect_all_repodata
repodatas = _collect_repodatas_serial(use_cache, tasks)
File "C:\Anaconda\lib\site-packages\conda\core\repodata.py", line 479, in _collect_repodatas_serial
for url, schan, pri in tasks]
File "C:\Anaconda\lib\site-packages\conda\core\repodata.py", line 479, in <listcomp>
for url, schan, pri in tasks]
File "C:\Anaconda\lib\site-packages\conda\core\repodata.py", line 109, in func
res = f(*args, **kwargs)
File "C:\Anaconda\lib\site-packages\conda\core\repodata.py", line 458, in fetch_repodata
mod_etag_headers.get('_mod'))
File "C:\Anaconda\lib\site-packages\conda\core\repodata.py", line 138, in fetch_repodata_remote_request
timeout=timeout)
File "C:\Anaconda\lib\site-packages\requests\sessions.py", line 531, in get
return self.request('GET', url, **kwargs)
File "C:\Anaconda\lib\site-packages\requests\sessions.py", line 518, in request
resp = self.send(prep, **send_kwargs)
File "C:\Anaconda\lib\site-packages\requests\sessions.py", line 639, in send
r = adapter.send(request, **kwargs)
File "C:\Anaconda\lib\site-packages\requests\adapters.py", line 438, in send
timeout=timeout
File "C:\Anaconda\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 594, in urlopen
self._prepare_proxy(conn)
File "C:\Anaconda\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 810, in _prepare_proxy
conn.connect()
File "C:\Anaconda\lib\site-packages\requests\packages\urllib3\connection.py", line 284, in connect
conn = self._new_conn()
File "C:\Anaconda\lib\site-packages\requests\packages\urllib3\connection.py", line 141, in _new_conn
(self.host, self.port), self.timeout, **extra_kw)
File "C:\Anaconda\lib\site-packages\requests\packages\urllib3\util\connection.py", line 51, in create_connection
if host.startswith('['):
AttributeError: 'NoneType' object has no attribute 'startswith'

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