It would be useful if PyChecker warned you when you
specify an octal literal and where the value would
differ from what you might expect if you didn't
*realise* that you were specifying an octal literal.
x = 04 # This doesn't need a warning: 04 == 4
#x = 09 # This doesn't need a warning: it will fail to
x= 012 # This *does* need a warning: 012 == 10