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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 deblind(rInv,y):
 """ Removes blinding using ephemeral key @rInv on (intermediate result) @y \in Gt. """

    # Verify types, then deblind using the values provided.
    assertScalarType(rInv)
    assertType(y, GtElement)
    return y ** rInv