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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 addtoreadergroup(self, groupname):
 """Add reader to a reader group."""


        hresult, hcontext = SCardEstablishContext(SCARD_SCOPE_USER)
        if 0 != hresult:
            raise EstablishContextException(hresult)
        try:
            hresult = SCardIntroduceReader(hcontext, self.name, self.name)
            if 0 != hresult and SCARD_E_DUPLICATE_READER != hresult:
                raise IntroduceReaderException(hresult, self.name)
            hresult = SCardAddReaderToGroup(hcontext, self.name, groupname)
            if 0 != hresult:
                raise AddReaderToGroupException(hresult, self.name, groupname)
        finally:
            hresult = SCardReleaseContext(hcontext)
            if 0 != hresult:
                raise ReleaseContextException(hresult)