exceptions.py

#! /usr/bin/env python

# e.g. from docs.python.org/2/tutorial/errors.html

import sys

try:
    f = open('myfile.txt')
    s = f.readline()
    i = int(s.strip())
except IOError as e:
    print "I/O error({0}): {1}".format(e.errno, e.strerror)
except ValueError:
    print "Could not convert data to an integer."
except:
    print "Unexpected error:" sys.exc_info()[0]
    raise