Question about randomstate usage in an svc example

As stated in the SVC documentation:

random_state: Controls the pseudo random number generation for shuffling the data for probability estimates. Ignored when probability is False. Pass an int for reproducible output across multiple function calls.

So in this particular case: random_state=42 does not change the behavior, but neither does it hurt performance.

It is helpful to have reproducible results when sharing/writing documentation. Therefore, it's often good to be in the habit of adding random_state=[something], even in cases when it is not strictly needed.