Is there any difference between print 3 and print '3' in Python ?

rusi rustompmody at gmail.com
Tue Mar 27 07:00:48 CEST 2012


On Mar 27, 8:43 am, Steven D'Aprano <steve
+comp.lang.pyt... at pearwood.info> wrote:
> On Mon, 26 Mar 2012 08:11:03 -0400, Dave Angel wrote:
> > On 03/26/2012 07:45 AM, redstone-c... at 163.com wrote:
> >> I know the print statement produces the same result when both of these
> >> two instructions are executed ,I just want to know Is there any
> >> difference between print 3 and print '3' in Python ?
>
> > This is a non-question.  The input is the same, the output is the same,
> > what else matters?
>
> def fib1(n):
>     if n == 0: return 0
>     elif n == 1: return 1
>     f2, f1 = 0, 1
>     for _ in range(2, n+1):
>         f2, f1 = f1, f2 + f1
>     return f1
>
> def fib2(n):
>     if n == 0: return 0
>     elif n == 1: return 1
>     else: return fib2(n-1) + fib2(n-2)
>
> Try calling fib1(35) and fib2(35). Still think only the input and output
> matter? :)
>
> For the record, fib2(35) ends up making a total of 29860703 function
> calls, compared to 35 iterations for fib1.
>
> --
> Steven

http://www.cse.buffalo.edu/~rapaport/intensional.html





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