import subprocess
import sys

def main():
    cmd = ["%s\jython.bat" % sys.prefix, '-c', 'import sys']
    print 'cmd: ', cmd
    result = subprocess.call(cmd)
    assert result==0

if __name__ == '__main__':
    print 'parent.__main__'
    # prevent recursion
    if len(sys.argv) > 1:
        raise RuntimeError, "recursive call of parent.py detected."
    main()
    sys.exit(0)