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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 match_header(cls, header):
 """A constant value HDU will only be recognized as such if the header contains a valid PIXVALUE and NAXIS == 0. """


        pixvalue = header.get('PIXVALUE')
        naxis = header.get('NAXIS', 0)

        return (super(_ConstantValueImageBaseHDU, cls).match_header(header) and
                (isinstance(pixvalue, float) or _is_int(pixvalue)) and
                naxis == 0)