[fc-script] specify minimum required Python version

share/analysis-scripts/find_fun.py

@@ -30,6 +30,10 @@ import os
 import re
 import glob
 
+MIN_PYTHON = (3, 5) # for glob(recursive)
+if sys.version_info < MIN_PYTHON:
+    sys.exit("Python %s.%s or later is required.\n" % MIN_PYTHON)
+
 debug = False
 
 arg = ""