Writes ``s`` to the terminal output stream

        Writes can be disabled by setting the environment variable
            `PROGRESSIVE_NOWRITE` to `'True'`

def write(self, s):
        """Writes ``s`` to the terminal output stream

        Writes can be disabled by setting the environment variable
            `PROGRESSIVE_NOWRITE` to `'True'`
        """
        should_write_s = os.getenv('PROGRESSIVE_NOWRITE') != "True"
        if should_write_s:
            self._stream.write(s)