On 1/18/2011 8:08 AM, Karim wrote:
I know this is ugly but until now it is the only way (with this side
effect) I found to declare Enums class that I _understand_:
*class CategoryType(object):
"""Implements the enumeration and prevent associated newly created
instances to redefine enums value via special class variable
'__slots__'
definition. It makes also, instances have no attributes at all.
"""
__slots__ = ()
TRANSISTOR, MOS, BIPOLAR, CAPACITOR, RESISTOR, DIODE, ESD, PAD, \
COMPARATOR, OPAMP, ADC, DAC, PLL, OTHER = range(14)
def toString ( self, litteral ):
"""Convert the litteral integer number to its associated
string representation."""
if litteral == self.TRANSISTOR:
return 'transistor'
elif litteral == self.MOS:
return 'mos'
elif litteral == self.BIPOLAR:*
[...]
IMHO this just cries out for a dictionary:
class CategoryType(object):
__slots__ = ()
enums = {
0: 'transistor',
1: 'mos',
...
}
def toString(self, literal):
"""Convert the literal integer number to its associated string
representation."""
return self.enums[literal]
Note this does not handle invalid literal.
If you are happy with range 14) you could alternatively use a list:
enums = ['transistor, 'mos', ...]
--
Bob Gailer
919-636-4239
Chapel Hill NC
_______________________________________________
Tutor maillist - Tutor@python.org
To unsubscribe or change subscription options:
http://mail.python.org/mailman/listinfo/tutor