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Re: Using + with strings considered bad

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From Mark Lawrence <breamoreboy@yahoo.co.uk>
Subject Re: Using + with strings considered bad
Date Wed, 29 Apr 2015 10:08:41 +0100
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On 29/04/2015 09:29, Cecil Westerhof wrote:
> Because I try to keep my lines (well) below 80 characters, I use the
> following:
>      print('Calculating fibonacci and fibonacci_memoize once for ' +
>            str(large_fibonacci) + ' to determine speed increase')
>
> But I was told that using + with strings was bad practice. Is this
> true? If so, what is the better way to do this?
>

It's not bad practice as such, it's simply that performance takes a nose 
dive if you're contatenating large numbers of strings.  If performance 
is an issue the recommended way is to write.

' '.join(strings)

-- 
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.

Mark Lawrence

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Thread

Using + with strings considered bad Cecil Westerhof <Cecil@decebal.nl> - 2015-04-29 10:29 +0200
  Re: Using + with strings considered bad Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-04-29 10:08 +0100
  Re: Using + with strings considered bad Peter Otten <__peter__@web.de> - 2015-04-29 11:24 +0200
    Re: Using + with strings considered bad Cecil Westerhof <Cecil@decebal.nl> - 2015-04-29 13:17 +0200
    Re: Using + with strings considered bad Cecil Westerhof <Cecil@decebal.nl> - 2015-04-29 14:23 +0200
      Re: Using + with strings considered bad Chris Angelico <rosuav@gmail.com> - 2015-04-29 22:55 +1000
  Re: Using + with strings considered bad Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-04-29 23:15 +1000
    Re: Using + with strings considered bad wxjmfauth@gmail.com - 2015-04-29 08:16 -0700
  Re: Using + with strings considered bad Andrew Berg <aberg010@my.hennepintech.edu> - 2015-04-29 06:40 -0500

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