Fout die zou kunnen gebeuren afhandelen.
try:
   f = open("foo")
except IOError:
   print "Couldn’t open ’foo’. Sorry."

def factorial(n):
   if n < 0:
      raise ValueError,"Expected non-negative number"
   if (n <= 1): return 1
      else: return n*factorial(n-1)

Instantie doorgeven of standaard sys.exc_info afdrukken:

          try:
                parser.feed(self.content)
            except sgmllib.SGMLParseError, inst:
                self.error = inst
                return 0
            except UnicodeEncodeError, inst:
                self.error = inst
                return 0
            except:
                self.error = sys.exc_info()[0]

Uncaught exception

>>> factorial(-1)
Traceback (innermost last):
File "<stdin>", line 1, in ?
File "<stdin>", line 3, in factorial
ValueError: Expected non-negative number
>>>