Script tool validation - update Paramaters arguments?

Question

creating some validation in a custom GP tool, getting an error in the tool after editing the validation code:

in TypeError: updateParameters() takes exactly 2 arguments (1 given)

But, here's the code:

def updateParameters(self,parameters):
 """Modify the values and properties of parameters before internal
 validation is performed. This method is called whenever a parameter
 has been changed."""
    if parameters[3].value:
       if parameters[3].value == "csv":
       parameters[4].enabled = False
       parameters[7].enabled = False
       parameters[8].enabled = False
    else:
       parameters[4].enabled = True
       parameters[7].enabled = True
       parameters[8].enabled = True
       parameters[9].enabled = False
       parameters[10].enabled = False

return

So, I see 2 arguments given, no?

AllenScully · Answer

Thanks Dan -

I actually got it work simply by removing the 'parameters' from:

def updateParameters(self, parameters):

So -

def updateParameters(self):

got me rolling.  But it was all for naught, since validation code appears to be ignored when your script tool is published as a GP Service.

Allen

DanPatterson_Retired · Answer

/blogs/dan_patterson/2016/08/14/script-formatting

where is the part of the script that calls it?

def is a method for the object

9. Classes — Python 3.8.3rc1 documentation

and it looks like you are passing a list to it, so I would expect

something.updateParameters(["a", "b", "csv", "d"])  # --- or something

where the parameter list has at least 11 entries