Issue with KEGG API

[ArnaudBelcour]

Hi,

Thank you for the package. I am using it to query KEGG to make metabolic graphs. There is an issue with the request to get the list of organisms (ArnaudBelcour/kegg2bipartitegraph#1).

Here is an example of code that leads to the issue on Python 3.12.2 using bioservices version 1.16.0:

from bioservices import KEGG

s = KEGG()
s.organismIds()

Leading to the error:

WARNING [bioservices.KEGG:535]:  HTTP 400 Bad Request (https://rest.kegg.jp/list/organism)
HTTP 400 Bad Request (https://rest.kegg.jp/list/organism)

WARNING [bioservices.KEGG:535]:  HTTP 400 Bad Request (https://rest.kegg.jp/list/organism)
HTTP 400 Bad Request (https://rest.kegg.jp/list/organism)
Traceback (most recent call last):
  File "/shared/Python_env/work_env/bin/k2bg", line 33, in <module>
    sys.exit(load_entry_point('kegg2bipartitegraph', 'console_scripts', 'k2bg')())
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/shared/Softwares/git/kegg2bipartitegraph/kegg2bipartitegraph/__main__.py", line 269, in main
    create_organism_network(args.input, args.output, args.reference_folder)
  File "/shared/Softwares/git/kegg2bipartitegraph/kegg2bipartitegraph/organism.py", line 173, in create_organism_network
    if KEGG_BIOSERVICES.isOrganism(organism) is not True:
       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/shared/Softwares/git/bioservices/src/bioservices/kegg.py", line 325, in isOrganism
    if org in self.organismIds:
              ^^^^^^^^^^^^^^^^
  File "/shared/Softwares/git/bioservices/src/bioservices/kegg.py", line 279, in __getattr__
    Ids = [x.split()[0] for x in res.split("\n") if len(x)]
                                 ^^^^^^^^^
AttributeError: 'HTTPResponseError' object has no attribute 'split'

I am not sure if this a temporary unavailability of the service or it is a change of the API. But currently https://rest.kegg.jp/list/organism leads to an error 400.

It is possible to get organism IDs with the list/genome request (https://rest.kegg.jp/list/genome), that also returns three/four letters code of organism names:

from bioservices import KEGG

s = KEGG()
s.list("genome")

I have made a fork with a small fix for self.organismIds to avoid encountering these errors when using the KEGG service (ArnaudBelcour@b388962), do you want me to do a PR?