Re: sort order for strings of digits

[Mark Lawrence]

On 31/10/2012 22:24, Ian Kelly wrote:
On Wed, Oct 31, 2012 at 3:33 PM, Mark Lawrence <breamore...@yahoo.co.uk>wrote:
Nope.  I'm busy porting my own code from 2.7 to 3.3 and cmp seems to be
very dead.

This doesn't help either.

c:\Users\Mark\Cash\Python>**2to3.py

Traceback (most recent call last):
   File "C:\Python33\Tools\Scripts\**2to3.py", line 3, in <module>
     from lib2to3.main import main
ImportError: No module named main


Perhaps you have a sys.path conflict?

Correct, now fixed, thanks.


Use functools.cmp_to_key for porting cmp functions.  "sort(x, my_cmp)"
becomes "sort(x, key=cmp_to_key(my_cmp))"

The cmp builtin is also gone.  If you need it, the suggested replacement
for "cmp(a, b)" is "(b < a) - (a < b)".

As it's my own small code base I've blown away all references to cmp, 
it's rich comparisons all the way.


Cheers,
Ian


--
Cheers.

Mark Lawrence.

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