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Showing content from https://mail.python.org/pipermail/python-dev/2008-August/081662.html below:

[Python-Dev] String concatenation

[Python-Dev] String concatenation [Python-Dev] String concatenationAntoine Pitrou solipsis at pitrou.net
Sun Aug 3 20:29:43 CEST 2008
Tres Seaver <tseaver <at> palladion.com> writes:
> 
> -1.  The feature exists to allow adherence to PEP-8, "Limit all lines to
> a maximum of 79 characters.", without requiring runtime concatenation
> costs.  I use it frequently when assembling and testing message strings,
> for instance.

In many cases there is no runtime concatenation cost.

>>> def f():
...  return "first" + "second"
... 
>>> import dis
>>> dis.dis(f)
  2           0 LOAD_CONST               3 ('firstsecond')
              3 RETURN_VALUE        


Regards

Antoine.


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