linting fights on this

Author: kthyng

oceans/filters.py

@@ -608,7 +608,7 @@ def pl33tn(x, dt=1.0, T=33.0, mode="valid", t=None):
     import pandas as pd
     import xarray as xr
 
-    if isinstance(x, xr.Dataset | pd.DataFrame):
+    if isinstance(x, (xr.Dataset, pd.DataFrame)):
         raise TypeError("Input a DataArray not a Dataset, or a Series not a DataFrame.")
 
     if isinstance(x, pd.Series) and not isinstance(