+
−#!/usr/bin/env python3
+
−
+
−from demos.base import setup
+
−import sys
+
−import os
+
−import re
+
−
+
−
+
−def list_demos():
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−    return sorted(fname for fname in os.listdir('demos')
+
−                  if re.match(r'[0-9]+_.*\.py', fname))
+
−
+
−
+
−def print_usage(names):
+
−    print("Usage: %s <name>\n" % sys.argv[0])
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−    print("Where <name> is one of (or part of):")
+
−    print('\n'.join(['    '+name for name in names]))
+
−
+
−
+
−if __name__ == '__main__':
+
−    setup()
+
−    names = list_demos()
+
−
+
−    if len(sys.argv) != 2:
+
−        print_usage(names)
+
−        sys.exit(0)
+
−
+
−    arg = sys.argv[1]
+
−    name = None
+
−    for name in names:
+
−        if arg in name:
+
−            break
+
−    else:
+
−        print("Demo '%s' not found." % arg)
+
−        sys.exit(1)
+
−
+
−    print("Executing %s..." % name)
+
−    with open('demos/' + name, 'r') as f:
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−        exec(f.read())