问如何在emacs中使用ELPY进行自动补全？

EN

Elpy Configuration

Emacs.............: 26.3
Elpy..............: 1.31.0
Virtualenv........: None
Interactive Python: python 3.7.4 (/Users/mdmorshed/.pyenv/shims/python)
RPC virtualenv....: rpc-venv (/Users/mdmorshed/.emacs.d/elpy/rpc-venv)
 Python...........: python 3.7.4 (/Users/mdmorshed/.emacs.d/elpy/rpc-venv/bin/python)
 Jedi.............: 0.15.1
 Rope.............: 0.14.0
 Autopep8.........: 1.4.4
 Yapf.............: 0.28.0
 Black............: 19.3b0
Syntax checker....: flake8 (/usr/local/bin/flake8)

You have not activated a virtual env. While Elpy supports this, it is
often a good idea to work inside a virtual env. You can use M-x
pyvenv-activate or M-x pyvenv-workon to activate a virtual env.

The directory ~/.local/bin/ is not in your PATH. As there is no active
virtualenv, installing Python packages locally will place executables
in that directory, so Emacs won't find them. If you are missing some
commands, do add this directory to your PATH -- and then do
`elpy-rpc-restart'.