246 lines
9.8 KiB
Markdown
246 lines
9.8 KiB
Markdown
# Python contribution layer for Spacemacs
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<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc/generate-toc again -->
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**Table of Contents**
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- [Python contribution layer for Spacemacs](#python-contribution-layer-for-spacemacs)
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- [Description](#description)
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- [Install](#install)
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- [Layer](#layer)
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- [Anaconda dependencies](#anaconda-dependencies)
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- [Automatic buffer formatting on save](#automatic-buffer-formatting-on-save)
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- [autoflake](#autoflake)
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- [Key Bindings](#key-bindings)
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- [Inferior REPL process](#inferior-repl-process)
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- [Running Python Script in shell](#running-python-script-in-shell)
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- [Testing in Python](#testing-in-python)
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- [Refactoring](#refactoring)
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- [Other Python commands](#other-python-commands)
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- [Django](#django)
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- [Fabric](#fabric)
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- [Files](#files)
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- [Interactive](#interactive)
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- [Server](#server)
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- [South/Syncdb](#southsyncdb)
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- [Test](#test)
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<!-- markdown-toc end -->
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## Description
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This layer adds support for the Python language.
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Features:
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- Auto-completion using [anaconda-mode][]
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- Code Navigation using [anaconda-mode][]
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- Documentation Lookup using [anaconda-mode][] and [pylookup][]
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- Test Runner using [nose.el][]
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- Virtual Environment using [pyvenv][] and [pyenv][]
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- semantic mode is enabled
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- Django support via [pony-mode][]
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- PEP8 compliant formatting via [YAPF][]
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- Suppression of unused import with [autoflake][]
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## Install
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### Layer
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To use this contribution add it to your `~/.spacemacs`
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```elisp
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(setq-default dotspacemacs-configuration-layers '(python))
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```
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### Anaconda dependencies
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`anaconda-mode` tries to install the dependencies itself but sometimes
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it does not work and you may encounter the following message when
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opening a python buffer:
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Blocking call to accept-process-output with quit inhibited!!
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To fix this, install the `anaconda-mode` [dependencies][anaconda-deps] by hand:
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pip install jedi==0.8.1 json-rpc==1.8.1 service_factory==0.1.2
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Source: https://github.com/proofit404/anaconda-mode#issues
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### Automatic buffer formatting on save
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To enable automatic buffer formatting on save with [YAPF][] set the variable
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`python-enable-yapf-format-on-save` to `t`.
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```elisp
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(setq-default dotspacemacs-configuration-layers '(
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(python :variables python-enable-yapf-format-on-save t)))
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```
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### autoflake
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To be able to suppress unused imports easily, install [autoflake][]:
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```sh
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pip install autoflake
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```
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## Key Bindings
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### Inferior REPL process
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Start a Python or iPython inferior REPL process with <kbd>SPC m s i</kbd>.
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If `ipython` is available in system executable search paths, `ipython`
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will be used to launch python shell; otherwise, default `python`
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interpreter will be used. You may change your system executable
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search path by activating a virtual environment.
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Send code to inferior process commands:
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Key Binding | Description
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----------------------|------------------------------------------------------------
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<kbd>SPC m s b</kbd> | send buffer and keep code buffer focused
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<kbd>SPC m s B</kbd> | send buffer and switch to REPL in insert mode
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<kbd>SPC m s f</kbd> | send function and keep code buffer focused
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<kbd>SPC m s F</kbd> | send function and switch to REPL in insert mode
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<kbd>SPC m s i</kbd> | start inferior REPL process
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<kbd>SPC m s r</kbd> | send region and keep code buffer focused
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<kbd>SPC m s R</kbd> | send region and switch to REPL in insert mode
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<kbd>CTRL+j</kbd> | next item in REPL history
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<kbd>CTRL+k</kbd> | previous item in REPL history
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### Running Python Script in shell
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To run a Python script like you would in the shell press <kbd>SPC m c c</kbd>
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to start the Python script in comint mode. This is useful when working with
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multiple Python files since the REPL does not reload changes made in other
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modules.
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Key Binding | Description
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<kbd>SPC m c c</kbd> | Execute current file in a comint shell
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<kbd>SPC m c C</kbd> | Execute current file in a comint shell and switch to it in `insert state`
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**Note** With the universal argument <kbd>SPC u</kbd> you can enter a new
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compilation command.
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### Testing in Python
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`Spacemacs` uses [nose][nose] as a test runner. An improved version of
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[nose.el][nose.el] is shipped with `Spacemacs`, this version adds:
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- windows support
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- test suite support
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The root of the project is detected with a `.git` directory or a `setup.cfg` file.
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Test commands (start with <kbd>m t</kbd> or <kbd>m T</kbd>):
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No Debug | Description
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<kbd>SPC m t a</kbd> | launch all tests of the project
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<kbd>SPC m t b</kbd> | launch all tests of the current buffer (same as module)
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<kbd>SPC m t m</kbd> | launch all tests of the current module
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<kbd>SPC m t s</kbd> | launch all tests of the current suite
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<kbd>SPC m t t</kbd> | launch the current test (function)
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Debug | Description
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<kbd>SPC m T a</kbd> | launch all tests of the project in debug mode
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<kbd>SPC m T b</kbd> | launch all tests of the current buffer (module) in debug mode
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<kbd>SPC m T m</kbd> | launch all tests of the current module in debug mode
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<kbd>SPC m T s</kbd> | launch all tests of the current suite in debug mode
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<kbd>SPC m T t</kbd> | launch the current test (function) in debug mode
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### Refactoring
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Key Binding | Description
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<kbd>SPC m r i</kbd> | remove unused imports with [autoflake][]
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### Other Python commands
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Key Binding | Description
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<kbd>SPC m =</kbd> | Reformat the buffer according to PEP8 using [YAPF][]
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<kbd>SPC m d b</kbd> | toggle a breakpoint
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<kbd>SPC m g g</kbd> | go to definition using `anaconda-mode-goto` (<kbd>C-o</kbd> to jump back)
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<kbd>SPC m h d</kbd> | look for documentation using `helm-pydoc`
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<kbd>SPC m h h</kbd> | quick documentation using anaconda
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<kbd>SPC m h H</kbd> | open documentation in `firefox` using [pylookup][pylookup]
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<kbd>SPC m v</kbd> | activate a virtual environment with [pyenv][pyenv]
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<kbd>SPC m V</kbd> | activate a virtual environment with [pyvenv][pyvenv]
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### Django
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Django related key bindings uses [pony-mode][] and are behind the prefix
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<kbd>SPC m j</kbd>.
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Configuration options for pony-mode are documented at
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[deadpansincerity.com](http://www.deadpansincerity.com/docs/pony/configuration.html)
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Manage Django with <kbd>SPC m j m</kbd>.
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#### Fabric
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Key Binding | Description
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<kbd>mjaf</kbd> | Run a fabric command
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<kbd>mjad</kbd> | Deploy project with `fab deploy`
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#### Files
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Key Binding | Description
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<kbd>mjfs</kbd> | Open the `settings.py` for this project
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<kbd>mjfc</kbd> | Interactively display a setting value in the minibuffer
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<kbd>mjft</kbd> | Jump to template at point
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<kbd>mjfr</kbd> | Jump to the view file that the URL resolves to (experimental)
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#### Interactive
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Key Binding | Description
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----------------------|------------------------------------------------------------
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<kbd>mjid</kbd> | Run interpreter for this project's default database as an inferior process
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<kbd>mjis</kbd> | Open a Python shell with the current pony project's context loaded. If the project has the django_extras package installed, then use the excellent `shell_plus` command. Otherwise, fall back to `manage.py shell`
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#### Server
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Key Binding | Description
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<kbd>mjrd</kbd> | Stop the dev server
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<kbd>mjro</kbd> | Open a tab at the dev server
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<kbd>mjrr</kbd> | Restart the dev server (works better with django_extras/werkzeug)
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<kbd>mjru</kbd> | Start or open the dev server
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<kbd>mjrt</kbd> | Open a second server with a "throwaway" host/port
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#### South/Syncdb
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Key Binding | Description
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<kbd>mjsc</kbd> | Convert an existing app to south
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<kbd>mjsh</kbd> | Create migration for modification
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<kbd>mjsi</kbd> | Run the initial south migration for an app
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<kbd>mjsm</kbd> | Migrate an app
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<kbd>mjss</kbd> | Run syncdb on the current project
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#### Test
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Key Binding | Description
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<kbd>mjtd</kbd> | Move down the traceback one level
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<kbd>mjte</kbd> | Go to the file and line of the last stack trace in a test buffer
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<kbd>mjto</kbd> | Open the file in a traceback at the line specified
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<kbd>mjtt</kbd> | Run the test(s) given by `command`
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<kbd>mjtu</kbd> | Move up the traceback one level
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[anaconda-mode]: https://github.com/proofit404/anaconda-mode
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[pyvenv]: https://github.com/jorgenschaefer/pyvenv
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[pyenv]: https://github.com/yyuu/pyenv
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[pylookup]: https://github.com/tsgates/pylookup
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[nose]: https://github.com/nose-devs/nose/
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[nose.el]: https://github.com/syl20bnr/nose.el
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[pony-mode]: https://github.com/davidmiller/pony-mode
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[anaconda-deps]: https://github.com/proofit404/anaconda-mode/blob/master/requirements.txt
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[YAPF]: https://github.com/google/yapf
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[autoflake]: https://github.com/myint/autoflake
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