Line continuation and comments

Weatherby,Gerard gweatherby at uchc.edu
Wed Feb 22 10:02:05 EST 2023


That’s a neat tip. End of line comments work, too

x = (3 > 4  #never
     and 7 == 7  # hopefully
     or datetime.datetime.now().day > 15 # sometimes
     )
print(x)

From: Python-list <python-list-bounces+gweatherby=uchc.edu at python.org> on behalf of Edmondo Giovannozzi <edmondo.giovannozzi at gmail.com>
Date: Wednesday, February 22, 2023 at 9:40 AM
To: python-list at python.org <python-list at python.org>
Subject: Re: Line continuation and comments
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Il giorno mercoledì 22 febbraio 2023 alle 09:50:14 UTC+1 Robert Latest ha scritto:
> I found myself building a complicated logical condition with many ands and ors
> which I made more manageable by putting the various terms on individual lines
> and breaking them with the "\" line continuation character. In this context it
> would have been nice to be able to add comments to lines terms which of course
> isn't possible because the backslash must be the last character on the line.
>
> Question: If the Python syntax were changed to allow comments after line-ending
> backslashes, would it break any existing code? I can't think of an example.

Well you can if you use parenthesis like in:
x = 5
a = (x > 3 and
#     x < 21 or
     x > 100
     )
You don't need the "\" to continue a line in this case

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