Replace distutils.spawn.find_executable by shutil.which (#253)

Author: 153957

sapphire/tests/test_utils.py

@@ -189,4 +189,5 @@ def test_which(self):
     def test_non_existent_program(self):
         """Check for error for non-existent program"""
 
-        self.assertRaises(Exception, utils.which, 'a_very_unlikely_program_name_to_exist_cosmic_ray')
+        with self.assertRaises(RuntimeError):
+            utils.which('a_very_unlikely_program_name_to_exist_cosmic_ray')

sapphire/utils.py

@@ -3,10 +3,10 @@
 The module contains some commonly functions and classes.
 
 """
+import shutil
 
 from bisect import bisect_right
 from contextlib import suppress
-from distutils.spawn import find_executable
 from functools import wraps
 from os import environ
 
@@ -169,7 +169,7 @@ def which(program):
     :param program: name or program to check for, e.g. 'wget'.
 
     """
-    path = find_executable(program)
+    path = shutil.which(program)
     if not path:
         raise RuntimeError(f'The program {program} is not available.')