Best Python code snippet using localstack_python
net.py
Source:net.py  
...182                f"The requested port ({port}) is not in the port range ({ports_range})."183            )184        with self._ports_lock:185            if port is not None:186                return self._try_reserve_port(port, duration=duration)187            else:188                for port_in_range in ports_range:189                    try:190                        return self._try_reserve_port(port_in_range, duration=duration)191                    except PortNotAvailableException:192                        # We ignore the fact that this single port is reserved, we just check the next one193                        pass194        raise PortNotAvailableException(195            "No free network ports available in the port range (currently reserved: %s)",196            list(self._ports_cache.keys()),197        )198    def _try_reserve_port(self, port: int, duration: int) -> int:199        """Checks if the given port is currently not reserved and can be bound."""200        if not self._ports_cache.get(port) and port_can_be_bound(port):201            # reserve the port for a short period of time202            self._ports_cache[port] = "__reserved__"203            if duration:204                self._ports_cache.set_expiry(port, duration)205            return port206        else:...Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.
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