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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 _random_subprocessor(self):
 """Creates a random subprocessor where there is a coupler between every pair of working qubits on opposite sides of the same cell. This is guaranteed to be minimal in that adding a qubit back in will reintroduce a bad coupler, but not to have minimum size. OUTPUT: an :class:`eden_processor` instance """

        deletion = set()
        for e in self._evil:
            if e[0] in deletion or e[1] in deletion:
                continue
            deletion.add(choice(e))
        return self._subprocessor(deletion)