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12 lines
295 B
Python
12 lines
295 B
Python
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#!/usr/bin/env python3
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import re
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import sys
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import subprocess
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flex = sys.argv[1]
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out = subprocess.check_output([flex, '--version'], universal_newlines=True,
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stderr=subprocess.STDOUT, stdin=subprocess.DEVNULL)
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print(re.search(r'(\d+\.\d+(\.\d+)?)', out).group())
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