def logs()

in composer_local_dev/environment.py [0:0]


    def logs(self, follow, max_lines):
        """
        Fetch and print logs from the running composer local environment.

        Container `logs` method returns blocking generator if follow is True,
        and byte-decoded string if follow is False. That's why we need two
        methods of handling and decoding logs.
        """
        log_lines = self.get_container(self.container_name).logs(
            timestamps=True,
            stream=follow,
            follow=follow,
            tail=max_lines,
        )
        if follow:
            LOG.debug(
                "Printing previous %s lines and following output "
                "from the container logs:",
                max_lines,
            )
            for line in log_lines:
                line = line.decode("utf-8").strip()
                console.get_console().print(line)
        else:
            LOG.debug(
                "Printing previous %s lines from container logs:", max_lines
            )
            log_lines = log_lines.decode("utf-8")
            for line in log_lines.split("\n"):
                console.get_console().print(line)