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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 set_seq1(self, a):
 """Same as SequenceMatcher.set_seq1, but check for non-list inputs implementation."""

        if a is self.a:
            return
        self.a = a
        if not isinstance(self.a, list):
            self.a = list(self.a)
        # Types must be hashable to work in the c layer.  This will raise if
        # list items are *not* hashable.
        [hash(x) for x in self.a]