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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 _strip_line_sep(self, s):
 """Strip trailing line separators from s, but no other whitespaces."""

        if s[-2:] == b'\r\n':
            return s[:-2]
        elif s[-1:] == b'\n':
            return s[:-1]
        else:
            return s