[Tutor] improve the code

[Peter Otten]

lina wrote:

> On Tue, Nov 1, 2011 at 10:33 PM, Dave Angel <d at davea.name> wrote:
>> On 11/01/2011 10:11 AM, lina wrote:

>> Just use the sort() method of the list object.  In particular, items()
>> returns an unordered list, so it's ready to be sorted.
>>
>> for residues, numbers in new_dictionary.items().sort():
>>
>> That will sort such that residues are in sorted order.
> 
> Thanks, but still something went wrong here,
> 
> Traceback (most recent call last):
>   File "fill-gap.py", line 41, in <module>
>     build_abetadictionary(DICTIONARYFILE,orig_dictionary)
>   File "fill-gap.py", line 31, in build_abetadictionary
>     for residues, numbers in new_dictionary.items().sort():
> AttributeError: 'dict_items' object has no attribute 'sort'

Dave didn't realize that you are using Python 3 where items() no longer 
returns a list. You need to change

new_dictionary.items().sort()

to 

sorted(new_dictionary.items())

as sorted() will accept an arbitrary iterable.

> I have another concerns,
> is it possible to append the output file content as a sing one,
> such as a.new is
> A 1
> B 3
> 
> b.new is
> A 3
> B 5
> 
> I wish the final one like:
> 
> A 1 3
> B 3 5
> 
> I will think about it. Thanks,

Sorry, I can't make sense of that.