It's hard to overstate how "normal" a non-match is. A typical program might
examine thousands of strings to identify the ten that match a pattern.
Exceptions shouldn't be used for cases that are in no way exceptional.
On Sun, Oct 22, 2023, 7:27 PM Greg Ewing wrote:
> On 23/10/23 1:36 am, Juancar
On 23/10/23 1:36 am, Juancarlo Añez wrote:
The *re* module is a black swan, because most of stdlib raises
exceptions on invalid arguments or not being able to deliver.
Most of the time, failure to match an re is not a programming error.
Often it's perfectly normal. Sometimes it's the result of
On 10/21/2023 8:31 PM, Chris Angelico wrote:
On Sun, 22 Oct 2023 at 11:29, MRAB wrote:
I think what the OP wants is to have re.match either return a match or
raise an exception.
Yes, and my point is that simply attempting to access an attribute
will do exactly that. It's not a silent failure.
On Mon, 23 Oct 2023 at 01:14, Juancarlo Añez wrote:
>
> The re module is a black swan, because most of stdlib raises exceptions on
> invalid arguments or not being able to deliver.
>
This is a comparison function, and like every other comparison
function, it signals its results with a return val
The *re* module is a black swan, because most of stdlib raises exceptions
on invalid arguments or not being able to deliver.
It's impossible to change *re* now, so wrapping the calls should be the
right solution.
--
Juancarlo Añez
mailto:apal...@gmail.com
On Sun, Oct 22, 2023 at 5:19 AM Stephen
Just as a further note, it's perfectly possible to write a helper:
def ensure_match(pattern, string):
m = re.match(pattern, string)
if m is None:
raise ValueError(f"Provided string did not match {pattern}")
return m
If the project is concerned about failures to check the retur
Chris Angelico writes:
> Why create a new argument, then mandate that you use it everywhere,
> just to achieve what's already happening?
"Newbies don't read code backwards very well" seems to be the
point.
While I'm not of the school that "I learned this painfully, so newbies
should learn this
