On 2009-01-29 20:15, Vernon Cole wrote: > I am busy hacking on code in an attempt to make adodbapi actually work in > three environments: CPython 2.3 to 2.6, CPython 3.0, and IronPython. One of > the first things that failed, when attempting to run on Python 3.0, was the > test for exception definitions. I quote: > > The module should make all error information available through >> these exceptions or subclasses thereof: >> >> Warning >> >> Exception raised for important warnings like data >> truncations while inserting, etc. It must be a subclass of >> the Python StandardError (defined in the module >> exceptions). >> >> Error >> >> Exception that is the base class of all other error >> exceptions. You can use this to catch all errors with one >> single 'except' statement. Warnings are not considered >> errors and thus should not use this class as base. It must >> be a subclass of the Python StandardError (defined in the >> module exceptions). >> > > This is impossible with Python 3.0, since there is neither an "exceptions" > module nor a "StandardError".
True, but that's render the whole PEP 249 obsolete ;-) Mark's proposal is the correct approach for Python 3.x (and as a matter of fact, the generally accepted way of porting apps using StandardError to Python 3.x, AFAIK). I'll add a note to the PEP. > Mark Hammond provided the following workaround: > > try: >> from exceptions import StandardError as _BaseException >> except ImportError: >> # py3k >> _BaseException = Exception >> >> class Error(_BaseException): >> pass >> >> class Warning(_BaseException): >> pass >> > > This makes the code work fine, except that, by strict definition, it > violates the api. -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Jan 29 2009) >>> Python/Zope Consulting and Support ... http://www.egenix.com/ >>> mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/ >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ ________________________________________________________________________ ::: Try our new mxODBC.Connect Python Database Interface for free ! :::: eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48 D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg Registered at Amtsgericht Duesseldorf: HRB 46611 http://www.egenix.com/company/contact/ _______________________________________________ DB-SIG maillist - DB-SIG@python.org http://mail.python.org/mailman/listinfo/db-sig
