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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 win_encode(s):
 """Encode unicodes for process arguments on Windows."""

    if isinstance(s, unicode):
        return s.encode(locale.getpreferredencoding(False))
    elif isinstance(s, bytes):
        return s
    elif s is not None:
        raise TypeError('Expected bytes or text, but got %r' % (s,))