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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 getpeercert(self, binary_form=False):
 """Retrieve the peer's certificate When binary form is requested, the peer's DER-encoded certficate is returned if it was transmitted during the handshake. When binary form is not requested, and the peer's certificate has been validated, then a certificate dictionary is returned. If the certificate was not validated, an empty dictionary is returned. In all cases, None is returned if no certificate was received from the peer. """


        try:
            peer_cert = _X509(SSL_get_peer_certificate(self._ssl.value))
        except openssl_error():
            return

        if binary_form:
            return i2d_X509(peer_cert.value)
        if self._cert_reqs == CERT_NONE:
            return {}
        return decode_cert(peer_cert)