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Re: Python console rejects an object reference, having made an object with that reference as its name in previous line

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On 12/14/2014 07:47 PM, Mark Lawrence wrote:
> I didn't realise that Python was so smart.  It can indicate a syntax 
> error at the final 't' in print before it gets to the opening bracket 
> that is required for the print function in Python 3 (and Python 2 if 
> you're using "from __future__ import print_function")?

Not really.  Python2 just interprets "print (value)" as an expression to
the print statement.  It's like saying "a=(value)" and then "print a".
Redundant but works.  However "print(value)" is interpreted as a
function call, and if you haven't imported it from future, it will error
out on Python2.

Python 3, on the other hand treats spaces between a function and its
opening paren to be optional whitespace.  Thus to python3,
"print(value)" and "print (value)" are the same.

So if you always put a space between print and (value) you can achieve
some measure of cross-version compatibility with print.  However by
including print_function from __future__ you are guaranteeing you won't
forget to add the parens.

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Python console rejects an object reference, having made an object with that reference as its name in previous line Simon Evans <musicalhacksaw@yahoo.co.uk> - 2014-12-14 08:15 -0800
  Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Ned Batchelder <ned@nedbatchelder.com> - 2014-12-14 11:36 -0500
  Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Simon Evans <musicalhacksaw@yahoo.co.uk> - 2014-12-14 10:37 -0800
    Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2014-12-14 20:51 +0200
  Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Billy Earney <billy.earney@gmail.com> - 2014-12-14 10:43 -0600
  Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Simon Evans <musicalhacksaw@yahoo.co.uk> - 2014-12-14 15:21 -0800
    Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-12-15 11:36 +1100
    Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Chris Roy-Smith <chris_roysmith@internode.on.net> - 2014-12-15 13:32 +1100
      Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Chris Angelico <rosuav@gmail.com> - 2014-12-15 13:42 +1100
      Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-12-15 02:47 +0000
      Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Michael Torrie <torriem@gmail.com> - 2014-12-14 22:27 -0700
      Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Chris Angelico <rosuav@gmail.com> - 2014-12-15 16:32 +1100
      Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Michael Torrie <torriem@gmail.com> - 2014-12-14 22:38 -0700
      Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Zachary Ware <zachary.ware+pylist@gmail.com> - 2014-12-14 23:51 -0600
      Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Chris Angelico <rosuav@gmail.com> - 2014-12-15 16:52 +1100
  Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Simon Evans <musicalhacksaw@yahoo.co.uk> - 2014-12-18 08:19 -0800
    Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Michael Torrie <torriem@gmail.com> - 2014-12-18 09:35 -0700
  Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Simon Evans <musicalhacksaw@yahoo.co.uk> - 2015-01-04 04:49 -0800
    Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-01-04 13:11 +0000
    Re: Python console rejects an object reference, having made an object with that reference as its name in previous line Dave Angel <davea@davea.name> - 2015-01-04 09:14 -0500

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