Supress OpenMP warning coming from numba

src/km3io/__init__.py

@@ -3,6 +3,12 @@ from pkg_resources import get_distribution, DistributionNotFound
 version = get_distribution(__name__).version
 
 import warnings
+import os
+
+# Getting rid of OpenMP warnings, related to Numba
+# See: https://github.com/numba/numba/issues/5275
+# This needs to be done before import numpy
+os.environ["KMP_WARNINGS"] = "off"
 
 with warnings.catch_warnings():
     for warning_category in (FutureWarning, DeprecationWarning):