Automatically formats Python code to conform to the PEP 8 style guide using autopep8 module Supported ST2 and ST3

• format / preview code according PEP8
• format / preview selected text
• format / preview all python modules in folder
• side bar menu
• formated code while saving

The easiest way to install AutoPEP8 in through Package Control, which can be found at this site: http://wbond.net/sublime_packages/package_control

Once you install Package Control, restart ST2/ST3 and bring up the Command Palette (Command+Shift+P on OS X, Control+Shift+P on Linux/Windows). Select "Package Control: Install Package", wait while Package Control fetches the latest package list, then select AutoPEP8 when the list appears.

{
    "settings": {
        "sublimeautopep8": {
            "max-line-length": 79,
            "format_on_save": false,
            "show_output_panel": true,
            // show Format/Preview menu items only for views
            // with syntax from `syntax_list`
            // value is base filename of the .tmLanguage syntax files
            "syntax_list": ["Python"],
            "file_menu_search_depth": 3  // max depth to search python files
        }
    }
}

• SideBar - right click on the file(s) or folder(s)
• Active view - right click on the view
• Selected text - right click on the selected text
• On Save - provide by settings: option format_on_save
• Command Palette - bring up the Command Palette and select PEP8: Format Code or PEP8: Preview Changes
• Hotkeys - Command/Control + Shift + 8 to format code, Command/Control + 8 to preview changes