[Tutor] improve the code

Dave Angel d at davea.name
Fri Nov 4 03:50:04 CET 2011

On 11/03/2011 10:39 PM, lina wrote:
> On Wed, Nov 2, 2011 at 12:14 AM, Peter Otten<__peter__ at web.de>  wrote:
>> lina wrote:
>> <SNIP>
>>>> items
> [('83ILE', 1), ('84ALA', 2), ('8SER', 0), ('9GLY', 0)]
>>>> parts = re.split(r"(\d+)",items)
> Traceback (most recent call last):
>    File "<pyshell#78>", line 1, in<module>
>      parts = re.split(r"(\d+)",items)
>    File "/usr/lib/python3.2/re.py", line 183, in split
>      return _compile(pattern, flags).split(string, maxsplit)
> TypeError: expected string or buffer
> Thanks,
This email of Peter's is what I was referring to as regex.  The re 
module is for processing regular expressions.  You'll have to go to 
someone else for help in it, but I can point out that you can only 
process one string with that line.  You're handing it a whole list.

So something like:

     for item in items:
           parts = re.split(.....
           print (repr(parts))

might show you what it's doing.  I suspect it'll give you a tuple with 
the numeric part first, and the non-numeric part second.



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