On Wed, Sep 16, 2009 at 3:48 AM, Paul Moore <p.f.mo...@gmail.com> wrote:
> 2009/9/16 Michael Foord <fuzzy...@voidspace.org.uk>: > > Georg Brandl wrote: > >> > >> May I have a short vote on this issue: > >> > >> http://bugs.python.org/issue6903 > >> > >> In short, pdb (since 2.6) uses a separate displayhook in order to avoid > >> _ being reassigned (which screws up debugging apps that use _ as > gettext). > >> In that displayhook, I did not add the suppression of printing None, as > >> it can be confusing to look at variables and get no output: > >> > >> (Pdb) foo > >> 1 > >> (Pdb) bar > >> (Pdb) > >> > >> (You could argue that this is what the "p" command is for though.) > >> > >> Now in Python 3, where print is a function, if you call print in a loop > >> (e.g. to debug a list or dictionary, as it is advertised in the pdb docs > >> under the "alias" command), the output has the printed values > interspersed > >> with "None"s. > >> > >> Now, what is the lesser evil? > >> > >> > > > > IMO not showing the extraneous Nones is preferable. > > I agree (although I don't use pdb, so my view shouldn't be given too > much weight...) > I *do* use pdb a lot, and I agree that the new behavior is weird. -- --Guido van Rossum (home page: http://www.python.org/~guido/)
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