def _options_form_default(self):
        default_env = "YOURNAME=%s\n" % self.user.name
        return """
        <label for="args">Extra notebook CLI arguments</label>
        <input name="args" placeholder="e.g. --debug"></input>
        <label for="env">Environment variables (one per line)</label>
        <textarea name="env">{env}</textarea>
        """.format(env=default_env)
dataset/ETHPy150Open jupyterhub/jupyterhub/examples/spawn-form/jupyterhub_config.py/DemoFormSpawner._options_form_default/original