Python data function runs forever without throwing error

[Luke George]

I have a python data function that on occasion runs forever without throwing an error and I have no idea what it's doing. The data function runs fine when the amount of data 'passed' to it remains below a certain (unknown) threshold, but when I 'pass' too much data to the function it just runs indefinitely. I can run the identical python script outside Spotfire using the same interpreter on my same PC with huge amounts of data (the exact same data that doesn't work inside Spotfire)and the function always completes within a few minutes at most. Anyone seen this type of behaviour before