moduleExists.py

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# Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
 
from functools import cache
import importlib.util
 
 
@cache
def moduleExists (modName):
    """Test for the existence of a module without actually importing it.
 
We could just do
  try:
    import modName
  except ImportError:
    ...
except that that has the potential to hide other errors."""
 
    return importlib.util.find_spec (modName) is not None