[Tutor] a quick Q: what does the "collapse" mean?

[Joel Goldstick]

On Thu, Sep 8, 2011 at 10:36 AM, Andre Engels <andreengels at gmail.com> wrote:

> On Thu, Sep 8, 2011 at 4:16 PM, lina <lina.lastname at gmail.com> wrote:
>
>> On Thu, Sep 8, 2011 at 9:59 PM, Alan Gauld <alan.gauld at btinternet.com>
>> wrote:
>> > On 08/09/11 14:02, lina wrote:
>> >>
>> >> Hi,
>> >>
>> >> I failed to understand the "collpase" meaning in a string.
>> >>
>> >> can someone give me a simple example?
>> >
>> > Can you give us some context?
>> > Its not a method of a string object so far as I can tell?
>> > Where did you read about it?
>>
>> >From "dive into python",
>>
>> http://diveintopython.org/
>>
>> one example:
>>
>> def info(object, spacing=10, collapse=1):
>>    """Print methods and docs strings.
>>
>>    Take modules, class, list, dictionary, or strong."""
>>    methodList = [e for e in dir(object) if callable(getattr(object, e))]
>>    processFunc = collapse and (lambda s: " ".join(s.split())) or (lambda
>> s: s)
>>    print "\n".join(["%s %s" %
>>                    (method.ljust(spacing),
>>                    processFunc(str(getattr(object, method).__doc__)))
>>                    for method in methodList])
>>
>> if __name__ == "__main__":
>>    print info.__doc__
>>
>> I felt so hard to understand the collapse,
>>
>> Please don't discourage me telling me it's an old book,
>> To me I started reading till 42 pages. let me finish it.
>>
>> I used to study python on and off,
>> sometimes give a whole week, but due to not using it,
>> so
>> it's frustrating that when I really needed it, I barely could complete
>> one.
>>
>
> Reading this, it seems that 'collapse' is a variable defined somewhere else
> in the code.
>
> --
> André Engels, andreengels at gmail.com
>
>
> _______________________________________________
> Tutor maillist  -  Tutor at python.org
> To unsubscribe or change subscription options:
> http://mail.python.org/mailman/listinfo/tutor
>
> collapse is a function that Mark must have described earlier in the chapter
you are working on.  Are you using the online version? which chapter



-- 
Joel Goldstick
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/tutor/attachments/20110908/53ff69fe/attachment.html>