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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 remote_addr(self):
 """Attempt to return the original client ip based on X-Forwarded-For or X-Real-IP. If HTTP headers are unavailable or untrusted, returns an empty string. :return: original client ip. """

        if not hasattr(self, "_remote_addr"):
            if self.app.config.PROXIES_COUNT == 0:
                self._remote_addr = ""
            elif self.app.config.REAL_IP_HEADER and self.headers.get(
                self.app.config.REAL_IP_HEADER
            ):
                self._remote_addr = self.headers[
                    self.app.config.REAL_IP_HEADER
                ]
            elif self.app.config.FORWARDED_FOR_HEADER:
                forwarded_for = self.headers.get(
                    self.app.config.FORWARDED_FOR_HEADER, ""
                ).split(",")
                remote_addrs = [
                    addr
                    for addr in [addr.strip() for addr in forwarded_for]
                    if addr
                ]
                if self.app.config.PROXIES_COUNT == -1:
                    self._remote_addr = remote_addrs[0]
                elif len(remote_addrs) >= self.app.config.PROXIES_COUNT:
                    self._remote_addr = remote_addrs[
                        -self.app.config.PROXIES_COUNT
                    ]
                else:
                    self._remote_addr = ""
            else:
                self._remote_addr = ""
        return self._remote_addr