# -*- coding: utf8 -*-
from __future__ import unicode_literals
import sys
print(sys.version)

def main():
    print('234'.isdecimal())


if __name__ == '__main__':
    main()

# -*- coding: utf8 -*-
from __future__ import unicode_literals


def main():
    print('234'.isdecimal())


if __name__ == '__main__':
    main()

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