Emacs：名为“ virtualenv”的程序；不存在

问题描述

当我处于python模式时，遇到以下错误消息。

 错误（jedi）：无法启动Jedi EPC服务器。 
 ***您可能需要运行 M-x jedi：install-server。 *** 
这可以解决问题，尤其是自Jedi.el安装或更新以来尚未运行
命令，并且服务器抱怨
 Python模块导入时。 
  

然后我尝试了 Mx jedi：install-server 。然后它抱怨

 名为 virtualenv的程序不存在
  请注意，我正在使用Windows 7  
 （当（memq窗口系统'（mac ns ））
（执行程序从外壳初始化路径））
  
尝试设置Windows环境下在emacs中关闭jedi已经给我造成了很多时间和麻烦，我只想一劳永逸地完成此工作。 
 
 
 
理想情况下，我正在寻找一个答案，该答案列出了在emacs中设置virtualenv（在Windows 7上）所需的所有步骤。 
解决方案
我遇到了同样的问题，但是在Windows 10上，我可以通过以下步骤操作它：
 
 
 
在终端（cmd / powershell /..):
  pip install virtualenv 
  
之后，在emacs中：
  Mx jedi：安装服务器
  
 Emacs可以安装服务器。
 
 
 
仅供参考，我正在运行python3.5，pip版本19.2.3，emacs26.2，W10 
 
I encountered the following error message, when I was in python mode. 
Error (jedi): Failed to start Jedi EPC server.
*** You may need to run "M-x jedi:install-server". ***
This could solve the problem especially if you haven't run the command yet
since Jedi.el installation or update and if the server complains about
Python module imports.
Then I tried M-x jedi:install-server. Then it complained that 
Program named "virtualenv" does not exist
Now from the results I got from google, I added the following line to my emacs.d/init.el file, but still I am getting the same error. Please note that I am using Windows 7
(when (memq window-system '(mac ns))
  (exec-path-from-shell-initialize))
Trying to set up jedi in emacs under Windows environment has caused me so much time and trouble already, I just want to complete this once and for all. 
Ideally, I am looking for an answer that lists out all the steps I need to setup the virtualenv (on Windows 7) in emacs. 
 解决方案 
I had the same problem but on Windows 10. I got it working by these steps:
In terminal (cmd/powershell/..):
pip install virtualenv
After that, in emacs:
M-x jedi:install-server
And Emacs could install the server.
FYI, I'm running python3.5, pip version 19.2.3, emacs26.2, W10
                        
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