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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _detect_term_type():
 """ Detect the type of the terminal. """

        if os.name == 'nt':
            if os.environ.get('TERM') == 'xterm':
                # maybe MinTTY
                return 'mintty'
            else:
                return 'nt'
        if platform.system().upper().startswith('CYGWIN'):
            return 'cygwin'
        return 'posix'