Creating Constants in Python

Some people say that creating constants in Python is something that can not and should not be done. However, if you have the need to create a class constant in Python, here is some code to get you started. The code appears below:


class Test( object ):
def getA( self ):
return 5

a = property( getA )

###############

t = Test()
print 'a=', t.a
t.a = 20

#print 'deleting...'
#del t.a


Try to set the class constant 'a', and you receive an AttributeError. Try to delete the class constant, and you also receive an AttributeError (uncomment the lines, first).