[Python-Dev] Suggested addition to PEP 8 for context managers

[Chris Angelico]

On Mon, Apr 16, 2012 at 3:13 AM, Raymond Hettinger
<raymond.hettinger at gmail.com> wrote:
> Instead, the context manager implements a different behavior.  It would
> have been better if that behavior had been given a name:
>
>    db = sqlite3.connect(filename)
>    with auto_commit_or_rollback(db):
>          # do a transaction

I agree that it wants a name. If explicitness is the goal, would this
be more suitable?

db = sqlite3.connect(filename)
with db.begin_transaction() as trans:
  # do a transaction

This way, if a database engine supports multiple simultaneous
transactions, the same syntax can be used.

Chris Angelico