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[Python-ideas] Show deprecation warnings in the interactive interpreter

Brett Cannon brett at python.org
Thu Feb 26 16:35:00 CET 2015 
On Wed, Feb 25, 2015 at 5:40 PM Victor Stinner <victor.stinner at gmail.com>
wrote:

> Hi,
>
> Python has more and more options to emit warnings or enable more checks.
> Maybe we need one global "strict" option to simply enable all checks and
> warnings at once?
>
> For example, there are deprecation warnings, but also resource warnings.
> Both should be enabled in the strict mode. Another example is the -bb
> command line option (bytes watning). It should also be enabled. More
> example: -tt (warnings on indentation).
>
> It can be a command line option, an environment variable and a function to
> enable it.
>
> Perl has "use strict;".
>
> For the interactive interpreter, the strict code may be enabled by
> default, but only if it's easy to disable it.
>

Regardless of this REPL discussions, having something like a --strict flag
to switch on every single warning that you can switch on to its highest
level would be handy to have.

-Brett


>
> Victor
>
> Le mercredi 25 février 2015, Serhiy Storchaka <storchaka at gmail.com> a
> écrit :
>
> What you are think about turning deprecation warnings on by default in the
>> interactive interpreter?
>>
>> Deprecation warnings are silent by default because they just annoys end
>> user that uses old Python program with new Python. End user usually is not
>> a programmer and can't do something with warnings. But in the interactive
>> interpreter the user is the author of executed code and can avoid to use
>> deprecated functions if warned.
>>
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