Newbie: Looking for code review on my first Python project.

[Steven D'Aprano]

On Tue, 10 Jan 2012 22:59:23 -0500, Terry Reedy wrote:

> On 1/10/2012 8:43 PM, Chris Angelico wrote:
> 
>> about = "Built by Walter Hurry using Python and wxPython,\n" + \
>>          "with wxGlade to generate the code for the GUI elements.\n" +
>>          \ "Phil Lewis' get_iplayer does the real work.\n\n" + \
>>          "Version 1.05: January 10, 2012"
>>
>> I'd do this with a triple-quoted string:
>>
>> about = """Built by Walter Hurry using Python and wxPython, with
>> wxGlade to generate the code for the GUI elements. Phil Lewis'
>> get_iplayer does the real work.
> 
> I would too, but if you prefer the indentation, just leave out the '+'s
> and let Python do the catenation when compiling:
>  >>> s = "abc\n" \
>      "def\n"\
>      "ghi"
>  >>> s
> 'abc\ndef\nghi'

Actually, in recent Pythons (2.5 or better, I believe) the peephole 
optimizer will do the concatenation at compile time even if you leave the 
+ signs in, provided that the parts are all literals.


>>> from dis import dis
>>> dis(compile(r's = "a\n" + "b\n"', '', 'single'))
  1           0 LOAD_CONST               3 ('a\nb\n')
              3 STORE_NAME               0 (s)
              6 LOAD_CONST               2 (None)
              9 RETURN_VALUE        


-- 
Steven