Quick help for a python newby, please

Wildman best_lay at yahoo.com
Thu Nov 24 00:46:07 EST 2016


On Thu, 24 Nov 2016 14:49:27 +1100, Chris Angelico wrote:

> On Thu, Nov 24, 2016 at 2:41 PM, Wildman via Python-list
> <python-list at python.org> wrote:
>> Point taken.  I did miss the python3 part.
>>
>> I switched to raw_input because it handles an empty
>> input.  An empty input would trigger the ValueError.
>> No doubt with the correct code the same or similar
>> could be done with input().  My lack of experience
>> caused me to look for simpler solution and perhaps
>> the wrong one.
> 
> The exact same thing is true of input() in Python 3. In Python 2,
> input() is the same as eval(raw_input()), so don't use it ever [1].
> You can happily use input() in Py3, even if you get empty input.
> 
> I like to put this at the top of cross-version scripts:
> 
> try: input = raw_input
> except NameError: pass
> 
> Then you can proceed to use input() without worries.
> 
> ChrisA
> 
> [1] Yes, I'm aware there are times when evalling the user's input is
> what you want. In those cases, be explicit and use eval.

Understood.  Thank you.

-- 
<Wildman> GNU/Linux user #557453
The cow died so I don't need your bull!



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