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Re: Rule of order for dot operators?

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  Re: Rule of order for dot operators? Joel Goldstick <joel.goldstick@gmail.com> - 2015-05-16 15:33 -0400

#90753 — Re: Rule of order for dot operators?

On Sat, May 16, 2015 at 3:20 PM, C.D. Reimer <chris@cdreimer.com> wrote:
> Greetings,
>
> Noobie question regarding a single line of code that transforms a URL slug
> ("this-is-a-slug") into a title ("This Is A Slug").
>
> title = slug.replace('-',' ').title()
>
> This line also works if I switched the dot operators around.
>
> title = slug.title().replace('-',' ')
>
> I'm reading the first example as character replacement first and title
> capitalization second, and the second example as title capitalization first
> and character replacement second.
>
> Does python perform the dot operators from left to right or according to a
> rule of order (i.e., multiplication/division before add/subtract)?
>
> Thank you,
>
> Chris Reimer
> --
> https://mail.python.org/mailman/listinfo/python-list

>From left to right.  So in your first example it replaces - with
space, then capitalizes each word.
In your second example, it does the caps first, then gets rid of the dashes

-- 
Joel Goldstick
http://joelgoldstick.com

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