[Python-Dev] pdb mini-sprint report and questions

[Georg Brandl]

Am 31.07.2010 01:01, schrieb Guido van Rossum:
> On Fri, Jul 30, 2010 at 3:45 PM, Georg Brandl <g.brandl at gmx.net> wrote:
>> to warm up for tomorrow's 3.2alpha1 release, I did a mini-sprint on
>> pdb issues today.  I'm pleased to report that 14 issues could be closed,
>> and pdb got a range of small new features, such as commands on the
>> command line, "until <lineno>" or "longlist" showing all the code for the
>> current function (the latter courtesy of Antonio Cuni's pdb++).
>>
>> One issue that's not yet closed is #7245, which adds a (very nice IMO)
>> feature: when you press Ctrl-C while the program being debugged runs,
>> you will not get a traceback but execution is suspended, and you can
>> debug from the current point of execution -- just like in gdb.
>>
>> However, there were apparently issues with some of the buildbots when
>> the patch was applied for a short time.  I also don't know how and if
>> it works on Windows, so I'd need some helpful people testing it.
>>
>> Another question is about a feature of pdb++ that I personally would
>> like, but imagine would make others unhappy:  one-letter abbreviations
>> of commands such as c(ontinue) or l(ist) are also often-used variable
>> names, so they are frequently typed without the required "!" or "print"
>> that would distinguish them from the command, and the command is
>> actually executed.  The feature in question would default to printing
>> the variable in cases where one exists -- handy enough or too
>> inconsistent?
> 
> Warning: 'p' is *not* the same as 'print'. 'p' is a built-in command
> that prints the expression's repr(). 'print' OTOH falls back through
> the interpreter and executes a print statement or function, which
> prints the str().

Not in py3k -- 'print' is an alias for 'p' there, otherwise 'print x'
would be a syntax error.

> For me personally, the problem this feature tries to address is never
> a problem (of course I am probably unique as far as pdb users go :-)
> so I'd like a way to turn it off.
> 
>> Also, are there any other features you would like to see?  One feature
>> of pdb++ that is general enough and has no dependencies would be watch
>> expressions...
> 
> Cool.

I take it you'd like to see them? ;)

Georg

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