idiomatic way to collect and report multiple exceptions?

[Terry Reedy]

On 5/6/2010 11:50 PM, Ben Cohen wrote:
> Is there a pythonic way to collect and display multiple exceptions at
> the same time?
>
> For example let's say you're trying to validate the elements of a
> list and you'd like to validate as many of the elements as possible
> in one run and still report exception's raised while validating a
> failed element.
>
> eg -- I'd like to do something like this:
>
> errors = []

  for item in data:
    try: process(item)
  except ValidationError as e:
    errors.append(e)

I believe each exception replaces the traceback message. So I would 
collect tracebacks rather than exceptions. Try the traceback module.

Terry Jan Reedy