ó
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k r e e n d S( s Enumeration metaclass.t
EnumMetaclassc B s) e Z d Z d Z d Z d Z RS( sg Metaclass for enumeration.
To define your own enumeration, do something like
class Color(Enum):
red = 1
green = 2
blue = 3
Now, Color.red, Color.green and Color.blue behave totally
different: they are enumerated values, not integers.
Enumerations cannot be instantiated; however they can be
subclassed.
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startswitht endswitht EnumInstancet setattrt append( t clst namet basest dictt attrt enumval( ( s0 /usr/lib64/python2.7/Demo/newmetaclasses/Enum.pyR s c C s | d k r | j St | d S( Nt __members__( R t AttributeError( R R ( ( s0 /usr/lib64/python2.7/Demo/newmetaclasses/Enum.pyt __getattr__ s c C s¿ d } } g | j D]* } t | t r | t k r | j ^ q } | r` d d j | } n g | j D] } d | t | | f ^ qj } | r« d d j | } n d | j | | f S( Nt s (%s)s , s %s: %ds : {%s}s %s%s%s( t __bases__t
isinstanceR t Enumt __name__t joinR t getattr( R t s1t s2t baset enumbasest valt
enumvalues( ( s0 /usr/lib64/python2.7/Demo/newmetaclasses/Enum.pyt __repr__" s
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__module__t __doc__R R R! ( ( ( s0 /usr/lib64/python2.7/Demo/newmetaclasses/Enum.pyR s t FullEnumMetaclassc B s e Z d Z d Z RS( sn Metaclass for full enumerations.
A full enumeration displays all the values defined in base classes.
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R t objR ( ( s0 /usr/lib64/python2.7/Demo/newmetaclasses/Enum.pyR 4 s ( R R" R# R ( ( ( s0 /usr/lib64/python2.7/Demo/newmetaclasses/Enum.pyR$ . s R c B s2 e Z d Z d Z d Z d Z d Z RS( s Class to represent an enumeration value.
EnumInstance('Color', 'red', 12) prints as 'Color.red' and behaves
like the integer 12 when compared, but doesn't support arithmetic.
XXX Should it record the actual enumeration rather than just its
name?
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Y} | j GH| j GH| GH| GH| GH| GHd S( Nt Colorc B s e Z d Z d Z d Z RS( i i i ( R R" t redt greent blue( ( ( s0 /usr/lib64/python2.7/Demo/newmetaclasses/Enum.pyR2 ] s i i t
ExtendedColorc B s& e Z d Z d Z d Z d Z d Z RS( i i i i i ( R R" t whitet oranget yellowt purplet black( ( ( s0 /usr/lib64/python2.7/Demo/newmetaclasses/Enum.pyR6 j s
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OtherColorc B s e Z d Z d Z RS( i i ( R R" R7 R5 ( ( ( s0 /usr/lib64/python2.7/Demo/newmetaclasses/Enum.pyR< v s t MergedColorc B s e Z RS( ( R R" ( ( ( s0 /usr/lib64/python2.7/Demo/newmetaclasses/Enum.pyR= z s ( R R3 t reprR5 R8 R7 ( R2 R6 R< R= ( ( s0 /usr/lib64/python2.7/Demo/newmetaclasses/Enum.pyt _test[ s& c C sø d t f d Y} | j GHt | j GH| j | j k GH| j | j k GH| j d k GH| j d k GHd | f d Y} | j GH| j GH| j | j k GHd t f d Y} d | | f d
Y} | j GH| j GH| GH| GH| GH| GHd S( NR2 c B s e Z d Z d Z d Z RS( i i i ( R R" R3 R4 R5 ( ( ( s0 /usr/lib64/python2.7/Demo/newmetaclasses/Enum.pyR2 s i i R6 c B s& e Z d Z d Z d Z d Z d Z RS( i i i i i ( R R" R7 R8 R9 R: R; ( ( ( s0 /usr/lib64/python2.7/Demo/newmetaclasses/Enum.pyR6 s
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