Emacs 的 Python3 开发环境配置

(defun my-python-mode-config ()
  (setq python-indent-offset 4
        python-indent 4
        indent-tabs-mode nil
        default-tab-width 4

        ;; 设置 run-python 的参数
        python-shell-interpreter "ipython"
        python-shell-interpreter-args "-i"
        python-shell-prompt-regexp "In \\[[0-9]+\\]: "
        python-shell-prompt-output-regexp "Out\\[[0-9]+\\]: "
        python-shell-completion-setup-code "from IPython.core.completerlib import module_completion"
        python-shell-completion-module-string-code "';'.join(module_completion('''%s'''))\n"
        python-shell-completion-string-code "';'.join(get_ipython().Completer.all_completions('''%s'''))\n")

  (add-to-list 'auto-mode-alist '("\\.py\\'" . python-mode))
  (hs-minor-mode t)                     ;开启 hs-minor-mode 以支持代码折叠
  (auto-fill-mode 0)                    ;关闭 auto-fill-mode，拒绝自动折行
  (whitespace-mode t)                   ;开启 whitespace-mode 对制表符和行为空格高亮
  (hl-line-mode t)                      ;开启 hl-line-mode 对当前行进行高亮
  (pretty-symbols-mode t)               ;开启 pretty-symbols-mode 将 lambda 显示成希腊字符 λ
  (set (make-local-variable 'electric-indent-mode) nil)) ;关闭自动缩进

(add-hook 'python-mode-hook 'my-python-mode-config)

(setenv "IPY_TEST_SIMPLE_PROMPT" "1")

(when (not (require 'company nil :noerror))
  (message "install company now...")
  (setq url-http-attempt-keepalives nil)
  (package-refresh-contents)
  (package-install 'company))

(add-hook 'after-init-hook 'global-company-mode)

(company-bbdb
 company-nxml
 company-css
 company-eclim
 company-semantic
 company-clang
 company-xcode
 company-cmake
 company-capf
 company-files
 (company-dabbrev-code company-gtags company-etags company-keywords)
 company-oddmuse company-dabbrev)

(when (not (require 'company-jedi nil :noerror))
  (message "install company-jedi now...")
  (setq url-http-attempt-keepalives nil)
  (package-refresh-contents)
  (package-install 'company-jedi))

mkdir -p ~/.emacs.d/.python-environments/

cd ~/.emacs.d/.python-environments/
virtualenv -p /usr/bin/python3  --prompt="<venv:jedi>" jedi

setup(
    name='jediepcserver',
    version='0.2.7',
    py_modules=['jediepcserver'],
    install_requires=[
        "jedi>=0.8.1",
        "epc>=0.0.4",
        "argparse",
    ],
    entry_points={
        'console_scripts': ['jediepcserver = jediepcserver:main'],
    },
    **args
)

~/.emacs.d/.python-environments/jedi/bin/pip install jedi>=0.8.1 epc>=0.0.4 argparse

~/.emacs.d/.python-environments/jedi/bin/pip install --upgrade ~/.emacs.d/elpa/jedi-core-20170319.2107/

~/.emacs.d/.python-environments/jedi/bin/pip install tensorflow==1.3.0 scipy==0.19.1 numy==1.13.1 scikit-learn==0.19.0

(setq jedi:environment-root "jedi")
(setq jedi:server-command (jedi:-env-server-command))

(defun config/enable-jedi ()
  (add-to-list 'company-backends 'company-jedi))
(add-hook 'python-mode-hook 'jedi:setup)
(add-hook 'python-mode-hook 'config/enable-jedi)

(when (not (require 'flycheck nil :noerror))
  (message "install flycheck now...")
  (setq url-http-attempt-keepalives nil)
  (package-refresh-contents)
  (package-install 'flycheck))

(defun config/enable-flycheck ()
  (flycheck-mode t))
(add-hook 'python-mode-hook 'config/enable-flycheck)

(defcustom flycheck-executable-find #'executable-find
  "Function to search for executables.

The value of this option is a function which is given the name or
path of an executable and shall return the full path to the
executable, or nil if the executable does not exit.

The default is the standard `executable-find' function which
searches `exec-path'.  You can customize this option to search
for checkers in other environments such as bundle or NixOS
sandboxes."
  :group 'flycheck
  :type '(choice (const :tag "Search executables in `exec-path'" executable-find)
                 (function :tag "Search executables with a custom function"))
  :package-version '(flycheck . "0.25")
  :risky t)

(defun executable-find (command)
  "Search for COMMAND in `exec-path' and return the absolute file name.
Return nil if COMMAND is not found anywhere in `exec-path'."
  ;; Use 1 rather than file-executable-p to better match the behavior of
  ;; call-process.
  (locate-file command exec-path exec-suffixes 1))

(push "<YOUR PYTHON3 VENV>/bin/" exec-path)

(when (not (require 'auto-virtualenvwrapper nil :noerror))
  (message "install auto-virtualenvwrapper now...")
  (setq url-http-attempt-keepalives nil)
  (package-refresh-contents)
  (package-install 'auto-virtualenvwrapper))

(add-hook 'python-mode-hook #'auto-virtualenvwrapper-activate)

(add-hook 'window-configuration-change-hook #'auto-virtualenvwrapper-activate)

(declare-function python-shell-calculate-exec-path "python")

(defun flycheck-virtualenv-executable-find (executable)
  "Find an EXECUTABLE in the current virtualenv if any."
  (if (bound-and-true-p python-shell-virtualenv-root)
      (let ((exec-path (python-shell-calculate-exec-path)))
        (executable-find executable))
    (executable-find executable)))

(defun flycheck-virtualenv-setup ()
  "Setup Flycheck for the current virtualenv."
  (setq-local flycheck-executable-find #'flycheck-virtualenv-executable-find))

(when (not (require 'py-autopep8 nil :noerror))
  (message "install autopep8 now...")
  (setq url-http-attempt-keepalives nil)
  (package-refresh-contents)
  (package-install 'py-autopep8))

pip install autopep8

(add-hook 'python-mode-hook 'py-autopep8-enable-on-save)

(setq py-autopep8-options '("--max-line-length=100"))