> >>> import dbm
> >>> with dbm.open("mydb", 'c') as d:
> ... d["hello"] = "world"
> ...
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> AttributeError: '_dbm.dbm' object has no attribute '__exit__'
This error message is somewhat misleading... it actually means you're trying to
use an object as a context manager, and it doesn't implement the context
manager protocol (defined __enter__ and __exit__ methods). In this case,
db.open() returns a dict -like object that is not a context manager. You'd need
to refactor your code to something like:
import dbm
d = dbm.open("mydb", 'c')
d["hello"] = "world"
d.close()
You may want to wrap any actions on d with a try-except-finally so you can
always close the db. If dbm objects were real context managers, they would do
this for you.
This does seem like a useful enhancement. It might be slightly involved to do,
as the dbm module has multiple implementations depending on what libraries are
available on the OS.
-Nick Cash
--
http://mail.python.org/mailman/listinfo/python-list
