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Groups > comp.lang.python > #63026

Re: Ifs and assignments

From Roy Smith <roy@panix.com>
Newsgroups comp.lang.python
Subject Re: Ifs and assignments
Date 2014-01-02 23:00 -0500
Organization PANIX Public Access Internet and UNIX, NYC
Message-ID <roy-ACE92F.23004902012014@news.panix.com> (permalink)
References <52C59FF6.5000607@allsup.co> <mailman.4816.1388709915.18130.python-list@python.org> <52c62fa8$0$30001$c3e8da3$5496439d@news.astraweb.com> <mailman.4824.1388721334.18130.python-list@python.org>

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In article <mailman.4824.1388721334.18130.python-list@python.org>,
 Chris Angelico <rosuav@gmail.com> wrote:

> On Fri, Jan 3, 2014 at 2:33 PM, Steven D'Aprano
> <steve+comp.lang.python@pearwood.info> wrote:
> > Personally, I find it hard to care about assignment as an expression. I find
> > the obvious C-inspired syntax terrible, as it is too easy to mistakenly use
> > == instead of = or visa versa:
> 
> Python has similar problems, though. It's inherent to the nature of
> symbolic languages.
> 
> a = (1, 2, 3)
> b = {1, 2, 3}
> 
> In many fonts, it's hard to tell one from the other without peering.
> Do people decry set literal notation in favour of explicitly writing
> the word "set"? No; and I think most of us agree that it's better to
> have the symbols. At least with == vs = there's a length difference. I
> don't think it's C's fault or problem that equality and assignment
> look similar and can be used in the same places, any more than it's a
> problem to have assignment and subtraction differ by only one stroke:
> 
> a - (1, 2, 3)
> 
> Is that confusingly similar to assignment?
> 
> ChrisA

I do this all the time:

t0 = time.time()
[some code]
t1 = time.time()
dt = t1 = t0   # <-- spot the typo?

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Thread

Re: Ifs and assignments Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-01-02 19:45 -0500
  Re: Ifs and assignments Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-01-03 14:33 +1100
    Re: Ifs and assignments Chris Angelico <rosuav@gmail.com> - 2014-01-03 14:49 +1100
      Re: Ifs and assignments Roy Smith <roy@panix.com> - 2014-01-02 23:14 -0500
        Re: Ifs and assignments Chris Angelico <rosuav@gmail.com> - 2014-01-03 15:25 +1100
        Re: Ifs and assignments Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-01-03 04:29 +0000
      Re: Ifs and assignments Duncan Booth <duncan.booth@invalid.invalid> - 2014-01-03 15:46 +0000
    Re: Ifs and assignments Chris Angelico <rosuav@gmail.com> - 2014-01-03 14:55 +1100
      Re: Ifs and assignments Roy Smith <roy@panix.com> - 2014-01-02 23:00 -0500
        Re: Ifs and assignments Chris Angelico <rosuav@gmail.com> - 2014-01-03 15:08 +1100

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