Update hyperopt script to new API

README.md

@@ -161,7 +161,7 @@ name as a string.
 
 What follows is the API reference for running the numpy interface.
 You likely don't need to tune the hyperparameters yourself,
-but if you would like, you can use `hyperopt.py` as an example.
+but if you would like, you can use `hyperparamopt.py` as an example.
 However, you should adjust `procs`, `niterations`,
 `binary_operators`, `unary_operators`, and `maxsize`
 to your requirements.

hyperparamopt.py

@@ -79,7 +79,7 @@ def run_trial(args):
                 print(f"Starting trial {j}")
                 trial = pysr.pysr(
                     test=f"simple{i}",
-                    threads=4,
+                    procs=4,
                     binary_operators=["plus", "mult", "pow", "div"],
                     unary_operators=["cos", "exp", "sin", "loga", "abs"],
                     equation_file=equation_file,