21 lines
598 B
Python
21 lines
598 B
Python
"""
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which.py : Same as the Unix "which" command: tests if an executable exists and returns name
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"""
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def which(program):
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# Author Credit: Jay @ http://stackoverflow.com/a/377028
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import os
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def is_exe(fpath):
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return os.path.isfile(fpath) and os.access(fpath, os.X_OK)
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fpath, fname = os.path.split(program)
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if fpath:
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if is_exe(program):
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return program
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else:
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for path in os.environ["PATH"].split(os.pathsep):
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exe_file = os.path.join(path, program)
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if is_exe(exe_file):
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return exe_file
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return None
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