spacemacs 中 python-layer 用 anaconda 补全失败

Spacemacs
1

添加了 python-layer，使用anaconda-mode-complete时没有任何反应，在anaconda-mode buffer中看到以下报错信息：

Searching for jedi>=0.13.0
Skipping development or system egg: jedi 0.15.1
Reading https://pypi.org/simple/jedi/
Download error on https://pypi.org/simple/jedi/: [WinError 10060]        ӷ   һ  ʱ    û    ȷ 𸴻    ӵ     û з Ӧ     ӳ   ʧ ܡ  -- Some packages may not be found!
Couldn't retrieve index page for 'jedi'
Scanning index of all packages (this may take a while)
Reading https://pypi.org/simple/
Download error on https://pypi.org/simple/: [WinError 10060]        ӷ   һ  ʱ    û    ȷ 𸴻    ӵ     û з Ӧ     ӳ   ʧ ܡ  -- Some packages may not be found!
No local packages or working download links found for jedi>=0.13.0
An exception has occurred, use %tb to see the full traceback.

SystemExit: error: Could not find suitable distribution for Requirement.parse('jedi>=0.13.0') (--always-copy skips system and development eggs)

c:\anaconda3\lib\site-packages\IPython\core\interactiveshell.py:3333: UserWarning: To exit: use 'exit', 'quit', or Ctrl-D.
  warn("To exit: use 'exit', 'quit', or Ctrl-D.", stacklevel=1)

实际已经用pip安装了0.15.1版本的jedi.