I install the coc-python as instruction.I can't get the completion of the third package such as numpy.zeros

[JinYanming]

Question： as my titile discribed,i got a problem about completion about numpy、torch and so on. This is my enviroment:

sudo apt-get update
sudo apt-get install -y software-properties-common
#sudo apt-get install -y python-software-properties 
sudo apt-add-repository -y ppa:neovim-ppa/stable
sudo apt-get update
sudo apt-get install -y neovim
sudo apt-get install -y python-neovim
sudo apt-get install -y python3-neovim
sudo apt-get install -y zsh
sudo apt-get install -y tmux
sudo apt-get install -y ctags
sudo apt-get install -y build-essential cmake python3-dev
sudo apt-get install -y git
sudo apt-get install -y python3-pip
sudo apt-get install -y python-pip
sudo apt-get install -y nodejs
sudo apt-get install -y yarn
sudo pip3 install --upgrade pip
sudo pip install update
sudo pip3 install update
sudo pip install pynvim python-language-server pyls-mypy pyls-black jedi==0.17.2
sudo pip3 install pynvim python-language-server pyls-mypy pyls-black jedi==0.17.2

my cocconfig is set as default(cocinstall coc-python). my init.vim is:

call plug#begin('~/.vim/plugged')
"plug configration <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
"Plug 'ervandew/supertab'
" Make sure you use single quotes
" colorschemes
Plug 'tomasr/molokai'

Plug 'majutsushi/tagbar'
Plug 'nathanaelkane/vim-indent-guides'
Plug 'https://github.com/junegunn/vim-github-dashboard.git'
Plug 'wakatime/vim-wakatime'
Plug 'scrooloose/nerdtree', { 'on':  'NERDTreeToggle' }

Plug 'tpope/vim-fireplace', { 'for': 'clojure' }

Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'

Plug 'altercation/vim-colors-solarized'
Plug 'nsf/gocode', { 'tag': 'v.20150303', 'rtp': 'vim' }
"helpers
Plug 'jiangmiao/auto-pairs'
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'
Plug 'junegunn/vim-easy-align'
Plug 'easymotion/vim-easymotion'

Plug '~/my-prototype-plugin'
Plug 'https://github.com/vim-scripts/taglist.vim.git'
" UI Plugin
Plug 'roxma/nvim-yarp'
Plug 'kien/ctrlp.vim'
Plug 'hdima/python-syntax'
Plug 'vim-syntastic/syntastic'
Plug 'rhysd/nyaovim-popup-tooltip'
" UI Plugin
"language server prototype
"Plug 'neovim/nvim-lsp'
"Plug 'autozimu/LanguageClient-neovim', {
"    \ 'branch': 'next',
"    \ 'do': 'bash install.sh',
"    \ }
"auto completion
Plug 'neoclide/coc.nvim', {'branch': 'release'}
Plug 'neoclide/coc-python', {'do': 'npm install'}
Plug 'neoclide/coc-snippets', {'do': 'npm install'}
Plug 'neoclide/coc-tsserver', {'do': 'npm install'}
Plug 'neoclide/coc-tabnine', {'do': 'npm install'}
"Plug 'davidhalter/jedi-vim'
" Initialize plugin system>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
call plug#end()
" Add (Neo)Vim's native statusline support.
" NOTE: Please see `:h coc-status` for integrations with external plugins that
" provide custom statusline: lightline.vim, vim-airline.
set statusline^=%{coc#status()}%{get(b:,'coc_current_function','')}%#warningmsg#%{SyntasticStatuslineFlag()}%F%m%r%h%w\ [FORMAT=%{&ff}]\ [TYPE=%Y]\ [POS=%l,%v][%p%%]\ %{strftime(\"%d/%m/%y\ -\ %H:%M\")}   "状态行显示的内容  
"set statusline^=%{coc#status()}%{get(b:,'coc_current_function','')}
"set statusline+=%#warningmsg#
"set statusline+=%{SyntasticStatuslineFlag()}
"set statusline+=%*
"set statusline=%F%m%r%h%w\ [FORMAT=%{&ff}]\ [TYPE=%Y]\ [POS=%l,%v][%p%%]\ %{strftime(\"%d/%m/%y\ -\ %H:%M\")}   "状态行显示的内容  
"LanguageClient configration
"let g:LanguageClient_serverCommands = {
"    \ 'javascript': ['/usr/local/bin/javascript-typescript-stdio'],
"    \ 'python': ['/usr/local/bin/pyls'],
"    \ 'shell': ['shellcheck'],     
"    \ }
"nnoremap <silent> K :call LanguageClient#textDocument_hover()<CR>
"nnoremap <silent> gd :call LanguageClient#textDocument_definition()<CR>
"nnoremap <silent> <F2> :call LanguageClient#textDocument_rename()<CR>
"""""syntax configration""""""""""""""
let g:syntastic_always_populate_loc_list = 1
let g:syntastic_auto_loc_list = 1
let g:syntastic_check_on_open = 1
let g:syntastic_check_on_wq = 0
let g:syntastic_python_checkers=['pylint']
let python_highlight_all = 1
let OPTION_NAME = 1
"""""""ctrlp setings""""""""""""
let g:ctrlp_map = '<c-p>'
"let g:ctrlp_cmd = 'CtrlP'<Paste>
let g:ctrlp_working_path_mode = 'ra'

" Nerd Tree Setup<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
map <C-h> :NERDTreeToggle<CR>
"当打开vim且没有文件时自动打开NERDTree
"autocmd vimenter * NERDTree
" 只剩 NERDTree时自动关闭
autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif
"列出当前目录文件  
map <F3> :NERDTreeToggle<CR>
imap <F3> <ESC> :NERDTreeToggle<CR>
"打开树状文件目录  
map <C-F3> \be  
" Nerd Tree Setup end>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
:autocmd BufRead,BufNewFile *.dot map <F4> :w<CR>:!dot -Tjpg -o %<.jpg % && eog %<.jpg  <CR><CR> && exec "redr!"

" Color Scheme Setup
syntax enable

"colorscheme solarized
colorscheme molokai
let g:airline_theme='light'
set background=dark

"easymotion configration<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

" <Leader>f{char} to move to {char}
map  <Leader>f <Plug>(easymotion-bd-f)
nmap <Leader>f <Plug>(easymotion-overwin-f)

" s{char}{char} to move to {char}{char}
nmap s <Plug>(easymotion-overwin-f2)

" Move to line
map <Leader>L <Plug>(easymotion-bd-jk)
nmap <Leader>L <Plug>(easymotion-overwin-line)

" Move to word
map  <Leader>w <Plug>(easymotion-bd-w)
nmap <Leader>w <Plug>(easymotion-overwin-w)

" Gif config
map  / <Plug>(easymotion-sn)
omap / <Plug>(easymotion-tn)

map  n <Plug>(easymotion-next)
map  N <Plug>(easymotion-prev)
"easymotion configration end>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
nmap <F8> :TagbarToggle<CR>
"COC nvim configration<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
" TextEdit might fail if hidden is not set.
set hidden

" Some servers have issues with backup files, see #649.
set nobackup
set nowritebackup

" Give more space for displaying messages.
set cmdheight=2

" Having longer updatetime (default is 4000 ms = 4 s) leads to noticeable
" delays and poor user experience.
set updatetime=300

" Don't pass messages to |ins-completion-menu|.
set shortmess+=c

" Always show the signcolumn, otherwise it would shift the text each time
" diagnostics appear/become resolved.
if has("patch-8.1.1564")
  " Recently vim can merge signcolumn and number column into one
  set signcolumn=number
else
  set signcolumn=yes
endif

" Use tab for trigger completion with characters ahead and navigate.
" NOTE: Use command ':verbose imap <tab>' to make sure tab is not mapped by
" other plugin before putting this into your config.
inoremap <silent><expr> <TAB>
      \ pumvisible() ? "\<C-n>" :
      \ <SID>check_back_space() ? "\<TAB>" :
      \ coc#refresh()
inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"

function! s:check_back_space() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~# '\s'
endfunction

" Use <c-space> to trigger completion.
if has('nvim')
  inoremap <silent><expr> <c-space> coc#refresh()
else
  inoremap <silent><expr> <c-@> coc#refresh()
endif

" Use <cr> to confirm completion, `<C-g>u` means break undo chain at current
" position. Coc only does snippet and additional edit on confirm.
" <cr> could be remapped by other vim plugin, try `:verbose imap <CR>`.
if exists('*complete_info')
  inoremap <expr> <cr> complete_info()["selected"] != "-1" ? "\<C-y>" : "\<C-g>u\<CR>"
else
  inoremap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
endif

" Use `[g` and `]g` to navigate diagnostics
" Use `:CocDiagnostics` to get all diagnostics of current buffer in location list.
nmap <silent> [g <Plug>(coc-diagnostic-prev)
nmap <silent> ]g <Plug>(coc-diagnostic-next)

" GoTo code navigation.
nmap <silent> gd <Plug>(coc-definition)
nmap <silent> gy <Plug>(coc-type-definition)
nmap <silent> gi <Plug>(coc-implementation)
nmap <silent> gr <Plug>(coc-references)

" Use K to show documentation in preview window.
nnoremap <silent> K :call <SID>show_documentation()<CR>

function! s:show_documentation()
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  else
    call CocAction('doHover')
  endif
endfunction

" Highlight the symbol and its references when holding the cursor.
autocmd CursorHold * silent call CocActionAsync('highlight')

" Symbol renaming.
nmap <leader>rn <Plug>(coc-rename)

" Formatting selected code.
xmap <leader>f  <Plug>(coc-format-selected)
nmap <leader>f  <Plug>(coc-format-selected)

augroup mygroup
  autocmd!
  " Setup formatexpr specified filetype(s).
  autocmd FileType typescript,json setl formatexpr=CocAction('formatSelected')
  " Update signature help on jump placeholder.
  autocmd User CocJumpPlaceholder call CocActionAsync('showSignatureHelp')
augroup end

" Applying codeAction to the selected region.
" Example: `<leader>aap` for current paragraph
xmap <leader>a  <Plug>(coc-codeaction-selected)
nmap <leader>a  <Plug>(coc-codeaction-selected)

" Remap keys for applying codeAction to the current buffer.
nmap <leader>ac  <Plug>(coc-codeaction)
" Apply AutoFix to problem on the current line.
nmap <leader>qf  <Plug>(coc-fix-current)

" Map function and class text objects
" NOTE: Requires 'textDocument.documentSymbol' support from the language server.
xmap if <Plug>(coc-funcobj-i)
omap if <Plug>(coc-funcobj-i)
xmap af <Plug>(coc-funcobj-a)
omap af <Plug>(coc-funcobj-a)
xmap ic <Plug>(coc-classobj-i)
omap ic <Plug>(coc-classobj-i)
xmap ac <Plug>(coc-classobj-a)
omap ac <Plug>(coc-classobj-a)

" Use CTRL-S for selections ranges.
" Requires 'textDocument/selectionRange' support of LS, ex: coc-tsserver
nmap <silent> <C-s> <Plug>(coc-range-select)
xmap <silent> <C-s> <Plug>(coc-range-select)

" Add `:Format` command to format current buffer.
command! -nargs=0 Format :call CocAction('format')

" Add `:Fold` command to fold current buffer.
command! -nargs=? Fold :call     CocAction('fold', <f-args>)

" Add `:OR` command for organize imports of the current buffer.
command! -nargs=0 OR   :call     CocAction('runCommand', 'editor.action.organizeImport')

" Mappings for CoCList
" Show all diagnostics.
nnoremap <silent><nowait> <space>a  :<C-u>CocList diagnostics<cr>
" Manage extensions.
nnoremap <silent><nowait> <space>e  :<C-u>CocList extensions<cr>
" Show commands.
nnoremap <silent><nowait> <space>c  :<C-u>CocList commands<cr>
" Find symbol of current document.
nnoremap <silent><nowait> <space>o  :<C-u>CocList outline<cr>
" Search workspace symbols.
nnoremap <silent><nowait> <space>s  :<C-u>CocList -I symbols<cr>
" Do default action for next item.
nnoremap <silent><nowait> <space>j  :<C-u>CocNext<CR>
" Do default action for previous item.
nnoremap <silent><nowait> <space>k  :<C-u>CocPrev<CR>
" Resume latest coc list.
nnoremap <silent><nowait> <space>p  :<C-u>CocListResume<CR>
"COC nvim configration end
" Specify a directory for plugins
" - For Neovim: ~/.local/share/nvim/plugged
" - Avoid using standard Vim directory names like 'plugin'
set nohlsearch
set number
set expandtab
set tabstop=8
set shiftwidth=4
set softtabstop=4
set autoindent
set cursorline

set et
set smarttab
set smartindent
set lbr
set fo+=mB
set sm
set selection=inclusive
set wildmenu
set mousemodel=popup

au FileType php setlocal dict+=~/.vim/dict/php_funclist.dict
au FileType css setlocal dict+=~/.vim/dict/css.dict
au FileType c setlocal dict+=~/.vim/dict/c.dict
au FileType cpp setlocal dict+=~/.vim/dict/cpp.dict
au FileType scale setlocal dict+=~/.vim/dict/scale.dict
au FileType javascript setlocal dict+=~/.vim/dict/javascript.dict
au FileType html setlocal dict+=~/.vim/dict/javascript.dict
au FileType html setlocal dict+=~/.vim/dict/css.dict

"
"syntastic相关
let g:fencview_autodetect=0
set rtp+=$GOROOT/misc/vim
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" 显示相关  
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
syntax on
set cul "高亮光标所在行
set cuc
set shortmess=atI   " 启动的时候不显示那个援助乌干达儿童的提示  
set go=             " 不要图形按钮  
"color desert     " 设置背景主题  
"color ron     " 设置背景主题  
"color torte     " 设置背景主题  
"set guifont=Courier_New:h10:cANSI   " 设置字体  
"autocmd InsertLeave * se nocul  " 用浅色高亮当前行  
autocmd InsertEnter * se cul    " 用浅色高亮当前行  
set ruler           " 显示标尺  
set showcmd         " 输入的命令显示出来，看的清楚些  
"set whichwrap+=<,>,h,l   " 允许backspace和光标键跨越行边界(不建议)  
set scrolloff=3     " 光标移动到buffer的顶部和底部时保持3行距离  
set laststatus=2    " 启动显示状态行(1),总是显示状态行(2)  
"set foldenable      " 允许折叠  
""set foldmethod=manual   " 手动折叠  
set nocompatible  "去掉讨厌的有关vi一致性模式，避免以前版本的一些bug和局限  
" 显示中文帮助
if version >= 603
    set helplang=cn
    set encoding=utf-8
endif
" 自动缩进
set autoindent
set cindent
" Tab键的宽度
set tabstop=4
" 统一缩进为4
set softtabstop=4
set shiftwidth=4
" 使用空格代替制表符
set expandtab
" 在行和段开始处使用制表符
set smarttab
" 显示行号
set number
" 历史记录数
set history=1000
"搜索逐字符高亮
set hlsearch
set incsearch
"语言设置
set langmenu=zh_CN.UTF-8
set helplang=cn
" 总是显示状态行
set cmdheight=2
" 侦测文件类型
filetype on
" 载入文件类型插件
filetype plugin on
" 为特定文件类型载入相关缩进文件
filetype indent on
" 保存全局变量
set viminfo+=!
" 带有如下符号的单词不要被换行分割
set iskeyword+=_,$,@,%,#,-
" 字符间插入的像素行数目

"markdown配置
au BufRead,BufNewFile *.{md,mdown,mkd,mkdn,markdown,mdwn}   set filetype=mkd
au BufRead,BufNewFile *.{go}   set filetype=go
au BufRead,BufNewFile *.{js}   set filetype=javascript
"rkdown to HTML  
nmap md :!~/.vim/markdown.pl % > %.html <CR><CR>
nmap fi :!firefox %.html & <CR><CR>
nmap \ \cc
vmap \ \cc

"将tab替换为空格
nmap tt :%s/\t/    /g<CR>

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
"""""新文件标题
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
"新建.c,.h,.sh,.java文件，自动插入文件头 
autocmd BufNewFile *.cpp,*.[ch],*.sh,*.rb,*.java,*.py exec ":call SetTitle()" 
""定义函数SetTitle，自动插入文件头 
func SetTitle() 
    "如果文件类型为.sh文件 
    if &filetype == 'sh' 
        call setline(1,"\#!/bin/bash") 
        call append(line("."), "") 
    elseif &filetype == 'python'
        call setline(1,"#!/usr/bin/env python")
        call append(line("."),"# coding=utf-8")
        call append(line(".")+1, "") 

    elseif &filetype == 'ruby'
        call setline(1,"#!/usr/bin/env ruby")
        call append(line("."),"# encoding: utf-8")
        call append(line(".")+1, "")

"    elseif &filetype == 'mkd'
"        call setline(1,"<head><meta charset=\"UTF-8\"></head>")
    else 
        call setline(1, "'''*************************************************************************") 
        call append(line("."), "    > File Name: ".expand("%")) 
        call append(line(".")+1, "  > Author: Your Name (edit this in the init.vim file)") 
        call append(line(".")+2, "  > Mail: Your Mail@mail.com") 
        call append(line(".")+3, "  > Created Time: ".strftime("%c")) 
        call append(line(".")+4, " ************************************************************************'''") 
        call append(line(".")+5, "")
    endif
    if expand("%:e") == 'cpp'
        call append(line(".")+6, "#include<iostream>")
        call append(line(".")+7, "using namespace std;")
        call append(line(".")+8, "")
    endif
    if &filetype == 'c'
        call append(line(".")+6, "#include<stdio.h>")
        call append(line(".")+7, "")
    endif
    if expand("%:e") == 'h'
        call append(line(".")+6, "#ifndef _".toupper(expand("%:r"))."_H")
        call append(line(".")+7, "#define _".toupper(expand("%:r"))."_H")
        call append(line(".")+8, "#endif")
    endif
    if &filetype == 'java'
        call append(line(".")+6,"public class ".expand("%:r"))
        call append(line(".")+7,"")
    endif
    "新建文件后，自动定位到文件末尾
endfunc 
autocmd BufNewFile * normal G

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
"键盘命令
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
:nmap <silent> <F9> <ESC>:Tlist<RETURN>
" shift tab pages
map <S-Left> :tabp<CR>
map <S-Right> :tabn<CR>
map! <C-Z> <Esc>zzi
map! <C-O> <C-Y>,
map <C-A> ggVG$"+y
map <Esc><Esc> :w<CR>
map <F12> gg=G
map <C-w> <C-w>w
imap <C-k> <C-y>,
imap <C-t> <C-q><TAB>
imap <C-j> <ESC>
" 选中状态下 Ctrl+c 复制
"map <C-v> "*pa
imap <C-v> <Esc>"*pa
imap <C-a> <Esc>^
imap <C-e> <Esc>$
vmap <C-c> "+y
set mouse=v
"去空行  
nnoremap <F2> :g/^\s*$/d<CR> 
"比较文件  
nnoremap <C-F2> :vert diffsplit 
"C，C++ 按F5编译运行
map <F5> :call CompileRunGcc()<CR>
func! CompileRunGcc()
    exec "w"
    if &filetype == 'c'
        exec "!g++ % -o %<"
        exec "!time ./%<"
    elseif &filetype == 'cpp'
        exec "!g++ % -std=c++11 -o %<"
        exec "!time ./%<"
    elseif &filetype == 'java' 
        exec "!javac %" 
        exec "!time java %<"
    elseif &filetype == 'sh'
        :!time bash %
    elseif &filetype == 'python'
        exec "!time python2.7 %"
    elseif &filetype == 'html'
        exec "!firefox % &"
    elseif &filetype == 'go'
"        exec "!go build %<"
        exec "!time go run %"
    elseif &filetype == 'mkd'
        exec "!~/.vim/markdown.pl % > %.html &"
        exec "!firefox %.html &"
    endif
endfunc
"C,C++的调试
map <F8> :call Rungdb()<CR>
func! Rungdb()
    exec "w"
    exec "!g++ % -std=c++11 -g -o %<"
    exec "!gdb ./%<"
endfunc

"代码格式优化化

map <F6> :call FormartSrc()<CR><CR>

"定义FormartSrc()
func FormartSrc()
    exec "w"
    if &filetype == 'c'
        exec "!astyle --style=ansi -a --suffix=none %"
    elseif &filetype == 'cpp' || &filetype == 'hpp'
        exec "r !astyle --style=ansi --one-line=keep-statements -a --suffix=none %> /dev/null 2>&1"
    elseif &filetype == 'perl'
        exec "!astyle --style=gnu --suffix=none %"
    elseif &filetype == 'py'||&filetype == 'python'
        exec "r !autopep8 -i --aggressive %"
    elseif &filetype == 'java'
        exec "!astyle --style=java --suffix=none %"
    elseif &filetype == 'jsp'
        exec "!astyle --style=gnu --suffix=none %"
    elseif &filetype == 'xml'
        exec "!astyle --style=gnu --suffix=none %"
    else
        exec "normal gg=G"
        return
    endif
    exec "e! %"
endfunc
"结束定义FormartSrc

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
""实用设置
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
if has("autocmd")
      autocmd BufReadPost *
          \ if line("'\"") > 0 && line("'\"") <= line("$") |
          \   exe "normal g`\"" |
          \ endif
endif

" 设置当文件被改动时自动载入
set autoread
" quickfix模式
autocmd FileType c,cpp map <buffer> <leader><space> :w<cr>:make<cr>
"代码补全 
set completeopt=preview,menu 
"允许插件  
"filetype plugin on
"共享剪贴板  
"set clipboard+=unnamed 
"自动保存
set autowrite
"set ruler                   " 打开状态栏标尺
"set cursorline              " 突出显示当前行
set magic                   " 设置魔术
set guioptions-=T           " 隐藏工具栏
set guioptions-=m           " 隐藏菜单栏
""set foldcolumn=0
""set foldmethod=indent 
""set foldlevel=3 
" 不要使用vi的键盘模式，而是vim自己的
set nocompatible
" 去掉输入错误的提示声音
set noeb
" 在处理未保存或只读文件的时候，弹出确认
set confirm
"禁止生成临时文件
set nobackup
set noswapfile
"搜索忽略大小写
set ignorecase

set linespace=0
" 增强模式中的命令行自动完成操作
set wildmenu
" 使回格键（backspace）正常处理indent, eol, start等
set backspace=2
" 允许backspace和光标键跨越行边界
set whichwrap+=<,>,h,l
" 可以在buffer的任何地方使用鼠标（类似office中在工作区双击鼠标定位）
set mouse=a
set selection=exclusive
set selectmode=mouse,key
" 通过使用: commands命令，告诉我们文件的哪一行被改变过
set report=0
" 在被分割的窗口间显示空白，便于阅读
set fillchars=vert:\ ,stl:\ ,stlnc:\
" 高亮显示匹配的括号
set showmatch
" 匹配括号高亮的时间（单位是十分之一秒）
set matchtime=1
" 光标移动到buffer的顶部和底部时保持3行距离
set scrolloff=3
" 为C程序提供自动缩进
"自动补全
"":inoremap ( ()<ESC>i
"":inoremap ) <c-r>=ClosePair(')')<CR>
":inoremap { {<CR>}<ESC>O
":inoremap } <c-r>=ClosePair('}')<CR>
"":inoremap [ []<ESC>i
"":inoremap ] <c-r>=ClosePair(']')<CR>
"":inoremap " ""<ESC>i
"":inoremap ' ''<ESC>i
""function! ClosePair(char)
""  if getline('.')[col('.') - 1] == a:char
""      return "\<Right>"
""  else
""      return a:char
""  endif
""endfunction
filetype plugin indent on 
"打开文件类型检测, 加了这句才可以用智能补全
set completeopt=longest,menu
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" CTags的设定  
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
let Tlist_Sort_Type = "name"    " 按照名称排序  
let Tlist_Use_Right_Window = 1  " 在右侧显示窗口  
let Tlist_Compart_Format = 1    " 压缩方式  
let Tlist_Exist_OnlyWindow = 1  " 如果只有一个buffer，kill窗口也kill掉buffer  
""let Tlist_File_Fold_Auto_Close = 0  " 不要关闭其他文件的tags  
""let Tlist_Enable_Fold_Column = 0    " 不要显示折叠树  
"let Tlist_Show_One_File=1            "不同时显示多个文件的tag，只显示当前文件的
"设置tags  
set autochdir
set tags=tags;  
set tags+=$HOME/.vim/tags/python3.ctags
set tags+=$HOME/.vim/tags/python3-dp.ctags
set tags+=$HOME/.vim/tags/python3-sp.ctags
"其他东东
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
"默认打开Taglist 
let Tlist_Auto_Open=0 
"""""""""""""""""""""""""""""" 
" Tag list (ctags) 
"""""""""""""""""""""""""""""""" 
let Tlist_Ctags_Cmd = '/usr/local/bin/ctags' 
let Tlist_Show_One_File = 1 "不同时显示多个文件的tag，只显示当前文件的 
let Tlist_File_Fold_Auto_Close = 1
let Tlist_Exit_OnlyWindow = 1 "如果taglist窗口是最后一个窗口，则退出vim 
let Tlist_Use_Right_Window = 1 "在右侧窗口中显示taglist窗口
let Tlist_Ctags_Cmd='/usr/local/bin/ctags'
" minibufexpl插件的一般设置
let g:miniBufExplMapWindowNavVim = 1
let g:miniBufExplMapWindowNavArrows = 1
let g:miniBufExplMapCTabSwitchBufs = 1
let g:miniBufExplModSelTarget = 1  
nmap tl :Tlist<cr>

set iskeyword+=.
set termencoding=utf-8
set encoding=utf8
set fileencodings=utf8,ucs-bom,gbk,cp936,gb2312,gb18030

and I test like below:

import numpy as np
np.

it shows the signatue. but the autocompletion is missed.

[JinYanming]

and when i try to go to the definition of 'np'. I got a error like this:

[coc.nvim] Jedi error: Traceback (most recent call last):
  File "completion.py", line 670, in watch
    response = self._process_request(rq)
  File "completion.py", line 612, in _process_request
    script.goto(line, column, follow_imports=True), request["id"]
  File "/usr/local/lib/python3.6/dist-packages/jedi/api/helpers.py", line 486, in wrapper
    column, line_len, line, line_string))
ValueError: `column` parameter (8) is not in a valid range (0-2) for line 2 ('np\n').
Press ENTER or type command to continue

and go to the definition of 'numpy' is ok.

[JinYanming]

@chemzqm

[JinYanming]

I solved it.

set iskeyword+=.

will make the autocompletion not work.