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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 esearch(self, db, term):
 """query the esearch endpoint """

        esr = ESearchResult(self._qs.esearch({'db': db, 'term': term}))
        if esr.count > esr.retmax:
            logger.warning("NCBI found {esr.count} results, but we truncated the reply at {esr.retmax}"
                        " results; see https://github.com/biocommons/eutils/issues/124/".format(esr=esr))
        return esr