Chris Withers <chris@simplistix.co.uk> wrote:

Hi All,

I used to do this:

...

...

...

import transaction with transaction: ... print 'hello' ... Traceback (most recent call last): File "<console>", line 1, in <module> AttributeError: __exit__

When did that stop working and what should I now do instead?

cheers,

Chris

You can use pure hackery to work around this: ----- t.py ----- def __enter__(*args): print 'enter', args def __exit__(*args): print 'exit', args def fixup(): import sys, types self = sys.modules[__name__] mymod = type(__name__, (types.ModuleType,), globals()) sys.modules[__name__] = mymod(__name__) fixup() ---------------- ------ t1.py --- #!python2.7 import t with t: print "transaction" ---------------- and the output is: C:\Temp>t1.py enter (<module 't' (built-in)>,) transaction exit (<module 't' (built-in)>, None, None, None) This is hackery though, and watch out for globals as the globals() dict known to the functions in t.py is no longer the same dict visible to modules that import it so changes to one won't be visible in the other and any functions in the module will behave like methods (so you have to give them a 'self' parameter). Much better just to change the code to define an object and import that from the module.