couleur en console avec python
******************************

.. note::

    il faut utiliser http://code.google.com/p/colorconsole
    ou voir l'utilisation de https://pypi.python.org/pypi/termcolor apriori plus simple

Windows
=======
Voici un module permettant d'avoir une sortie console avec un gestion des couleurs de:

* foreground
* background

le module **color_console.py**

.. code-block:: python
    
    """
    Colors text in console mode application (win32).
    Uses ctypes and Win32 methods SetConsoleTextAttribute and
    GetConsoleScreenBufferInfo.
    
    $Id: color_console.py 534 2009-05-10 04:00:59Z andre $
    """
    
    from ctypes import windll, Structure, c_short, c_ushort, byref
    
    SHORT = c_short
    WORD = c_ushort
    
    class COORD(Structure):
        """struct in wincon.h."""
        _fields_ = [
            ("X", SHORT),
            ("Y", SHORT)]
    
    class SMALL_RECT(Structure):
        """struct in wincon.h."""
        _fields_ = [
            ("Left", SHORT),
            ("Top", SHORT),
            ("Right", SHORT),
            ("Bottom", SHORT)]
    
    class CONSOLE_SCREEN_BUFFER_INFO(Structure):
        """struct in wincon.h."""
        _fields_ = [
            ("dwSize", COORD),
            ("dwCursorPosition", COORD),
            ("wAttributes", WORD),
            ("srWindow", SMALL_RECT),
            ("dwMaximumWindowSize", COORD)]
    
    # winbase.h
    STD_INPUT_HANDLE = -10
    STD_OUTPUT_HANDLE = -11
    STD_ERROR_HANDLE = -12
    
    # wincon.h
    FOREGROUND_BLACK         = 0x0000
    FOREGROUND_BLUE            = 0x0001
    FOREGROUND_GREEN         = 0x0002
    FOREGROUND_CYAN            = 0x0003
    FOREGROUND_RED             = 0x0004
    FOREGROUND_MAGENTA     = 0x0005
    FOREGROUND_YELLOW        = 0x0006
    FOREGROUND_GREY            = 0x0007
    FOREGROUND_INTENSITY = 0x0008 # foreground color is intensified.
    
    BACKGROUND_BLACK         = 0x0000
    BACKGROUND_BLUE            = 0x0010
    BACKGROUND_GREEN         = 0x0020
    BACKGROUND_CYAN            = 0x0030
    BACKGROUND_RED             = 0x0040
    BACKGROUND_MAGENTA     = 0x0050
    BACKGROUND_YELLOW        = 0x0060
    BACKGROUND_GREY            = 0x0070
    BACKGROUND_INTENSITY = 0x0080 # background color is intensified.
    
    stdout_handle = windll.kernel32.GetStdHandle(STD_OUTPUT_HANDLE)
    SetConsoleTextAttribute = windll.kernel32.SetConsoleTextAttribute
    GetConsoleScreenBufferInfo = windll.kernel32.GetConsoleScreenBufferInfo
    
    def get_text_attr():
        """Returns the character attributes (colors) of the console screen
        buffer."""
        csbi = CONSOLE_SCREEN_BUFFER_INFO()
        GetConsoleScreenBufferInfo(stdout_handle, byref(csbi))
        return csbi.wAttributes
    
    def set_text_attr(color):
        """Sets the character attributes (colors) of the console screen
        buffer. Color is a combination of foreground and background color,
        foreground and background intensity."""
        SetConsoleTextAttribute(stdout_handle, color)
    
    
    import sys
    
    def test():
        """Simple Pyton 3.0 test for color_console."""
        default_colors = get_text_attr()
        default_bg = default_colors & 0x0070
        default_fg = default_colors & 0x0007
        set_text_attr(FOREGROUND_GREEN | default_bg | FOREGROUND_INTENSITY)
        print('===========================================')
        set_text_attr(FOREGROUND_BLUE | BACKGROUND_GREY | FOREGROUND_INTENSITY | BACKGROUND_INTENSITY)
        print('And Now for Something', end=' ')
        sys.stdout.flush() # Force writing first part of the line in blue
        set_text_attr(FOREGROUND_RED | BACKGROUND_GREY | FOREGROUND_INTENSITY | BACKGROUND_INTENSITY)
        print('Completely Different!')
        set_text_attr(default_colors)
        set_text_attr(FOREGROUND_RED | default_bg | FOREGROUND_INTENSITY)
        print('===========================================')
        set_text_attr(default_colors)
    
    if __name__ == "__main__":
      test()

On peut le retrouver sur le lien http://www.burgaud.com/bring-colors-to-the-windows-console-with-python/

Il existe aussi un module qui gère la coloration directement au niveau du terminal

http://code.google.com/p/colorconsole

Il existe a prior un module multiplateforme https://pypi.python.org/pypi/colorama

Linux
=====
on doit lancer avec le print des caractères invisibles
exemple non testé

.. code-block:: python

    class bcolors:
        HEADER = '\033[95m'
        OKBLUE = '\033[94m'
        OKGREEN = '\033[92m'
        WARNING = '\033[93m'
        FAIL = '\033[91m'
        ENDC = '\033[0m'
    
        def disable(self):
            self.HEADER = ''
            self.OKBLUE = ''
            self.OKGREEN = ''
            self.WARNING = ''
            self.FAIL = ''
            self.ENDC = ''
    
    print(bcolors.WARNING + "Warning: No active frommets remain. Continue?"+ bcolors.ENDC)


Il existe a prior un module multiplateforme https://pypi.python.org/pypi/colorama