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distutils is deprecated and shutil.which is the suggested replacement for this function. https://peps.python.org/pep-0632/#migration-advice https://docs.python.org/3/library/shutil.html#shutil.which It was added in Python3.3 but given that we're already using shutil.which elsewhere I think this is ok/no worse than before. We do have our own find_executable in lldb/test/Shell/helper/build.py but I'd rather leave that as is for now. Also we have our own versions of which() but again, a change for another time. This work is part of #54337. Reviewed By: JDevlieghere Differential Revision: https://reviews.llvm.org/D124601