On Fri, May 27, 2011 at 11:21 AM, Vossen, Bodo <bodo.vos...@mpi-bn.mpg.de> wrote: > > Hi all, > > I've implemented functionality for adding tools via the admin menu.
That sounds very useful in principle, although perhaps the less flexible alternative of reloading tool_conf.xml would achieve the same aim? > ... > Then it is checked if script and XML are "compatible" by > checking if they have the same number of arguments. This seems very fragile, and having looked at the code for detecting the number of arguments in a Python script it looks like it will get it wrong in many situations. Even for something quite simple like this: #sys.argv is the script file itself assert len(sys,argv)==4, "Expect 3 arguments" arg1, arg2, arg3 = sys.argv[1:] Also, what about conditional code like this? assert len(sys.argv)==4, "Expect 3 arguments" if sys.argv == "db": database = sys.argv filename = None else: database = None filename = sys.argv out_filename = sys.argv If I have read your get_parameter_number code right, it would claim there are four arguments since there are four lines of the basic form variable = sys.argv[i] Also, it cannot possibly work when there are a varying number of arguments, for example a repeat argument. If you want a test case, my Venn Diagram tool on the Tool Shed should be relevant (its a python script). > If you have any comments or question please do not > hesitate to contact me, I'm open for every kind of critics. I would remove the attempt to check the number of arguments. It is practically impossible to get this right in all cases, so I don't think it is worth doing. Having valid script/xml combinations rejected would be quite annoying. Peter ___________________________________________________________ Please keep all replies on the list by using "reply all" in your mail client. To manage your subscriptions to this and other Galaxy lists, please use the interface at: http://lists.bx.psu.edu/