Exception Classes : Error Exception « Statement « Python Tutorial

1. Python Tutorial
2. Statement
3. Error Exception

class RangeException(Exception) :
    def __init__(self, low, high) :
        self.low = low
        self.high = high
    def __str__(self) :
        s = "Expected value in range "+str(self.low)
        s = s + " to "
        s = s + str(self.high)
        return s

def CheckValue( inV ) :
    if ( inV < 0 or inV > 10 ) :
        raise RangeException(0,10)
    return True

CheckValue(12)

import sys

try :
       CheckValue(12)
except Exception:
       print sys.exc_info()

try :
      CheckValue(12)
except RangeException, re:
      print "You didn't enter a value between: "+str(re.low)+", and "+str(re.high)