contextlib_closing.py

#!/usr/bin/env python


import contextlib


class Door(object):
    def __init__(self):
        print ' __init__()'

    def close(self):
        print ' close()'

print 'Normal Example:'
with contextlib.closing(Door()) as door:
    print '  inside with statement'

print '\nError handling example:'
try:
    with contextlib.closing(Door()) as door:
        print '  raising from inside with statement'
        raise RuntimeError('error message')
except Exception, err:
    print ' Had an error:', err