Upgrade to ArcGIS 10.3 produces strange behavior with Python

Anonymous User

I have recently upgraded to ArcGIS 10.3 and all my script tools are not working.  For some reason, within any ArcGIS process, the built-in sys module does not have the argv attribute.  It works as expected in stand-alone.  This affects me because I use sys.argv in virtually all the script tools I have developed for my organization (70+) to pass in arguments.

For example, if I have a function like this:

def function(arg1, arg2, arg3):
    pass

It is easier to call the function and pass in parameters from a script tool like this:

function(*sys.argv[1:])

rather than:

param1 = arcpy.GetParameterAsText(0)
param2 = arcpy.GetParameterAsText(1)
param3 = arcpy.GetParameterAsText(2)

function(param1, param2, param3)

However, after the upgrade, ONLY in any ArcGIS process the sys module is lacking the argv attribute.  See pictures below:

fails in ArcGIS Python Window

and works as expected in regular IDLE shell

Is there something different about how ArcGIS is accessing Python in version 10.3?

Anonymous User

Yes, this is what I used to use before I switched to sys.argv[1:].  I uninstalled ArcGIS 10.3 and re-installed and it seemed to fix the issue.  Something must have gotten corrupted when I did the original install.