from .labapp import LabApp

try:
    from jupyterhub.singleuser import SingleUserNotebookApp
except ImportError:
    SingleUserLabApp = None
    raise ImportError('You must have jupyterhub installed for this to work.')
else:
    class SingleUserLabApp(SingleUserNotebookApp, LabApp):
        def init_webapp(self, *args, **kwargs):
            super().init_webapp(*args, **kwargs)
            settings = self.web_app.settings
            if 'page_config_data' not in settings:
                settings['page_config_data'] = {}
            settings['page_config_data']['hub_prefix'] = self.hub_prefix
            settings['page_config_data']['hub_host'] = self.hub_host
            settings['page_config_data']['hub_user'] = self.user


def main(argv=None):
    return SingleUserLabApp.launch_instance(argv)


if __name__ == "__main__":
    main()

import os
from .labapp import LabApp

try:
    from jupyterhub.singleuser import SingleUserNotebookApp
except ImportError:
    SingleUserLabApp = None
    raise ImportError('You must have jupyterhub installed for this to work.')
else:
    class SingleUserLabApp(SingleUserNotebookApp, LabApp):

        def init_webapp(self, *args, **kwargs):
            super().init_webapp(*args, **kwargs)
            settings = self.web_app.settings
            if 'page_config_data' not in settings:
                settings['page_config_data'] = {}
            settings['page_config_data']['hub_prefix'] = self.hub_prefix
            settings['page_config_data']['hub_host'] = self.hub_host
            settings['page_config_data']['hub_user'] = self.user
            api_token = os.getenv('JUPYTERHUB_API_TOKEN')
            if not api_token:
                api_token = ''
            if not self.token:
                try:
                    self.token = api_token
                except AttributeError:
                    self.log.error("Can't set self.token")
            settings['page_config_data']['token'] = api_token


def main(argv=None):
    return SingleUserLabApp.launch_instance(argv)


if __name__ == "__main__":
    main()

Add api_token from environment, if it's present.
Add api_token from environment, if it's present.

+ import os
  from .labapp import LabApp
  
  try:
      from jupyterhub.singleuser import SingleUserNotebookApp
  except ImportError:
      SingleUserLabApp = None
      raise ImportError('You must have jupyterhub installed for this to work.')
  else:
      class SingleUserLabApp(SingleUserNotebookApp, LabApp):
+ 
          def init_webapp(self, *args, **kwargs):
              super().init_webapp(*args, **kwargs)
              settings = self.web_app.settings
              if 'page_config_data' not in settings:
                  settings['page_config_data'] = {}
              settings['page_config_data']['hub_prefix'] = self.hub_prefix
              settings['page_config_data']['hub_host'] = self.hub_host
              settings['page_config_data']['hub_user'] = self.user
+             api_token = os.getenv('JUPYTERHUB_API_TOKEN')
+             if not api_token:
+                 api_token = ''
+             if not self.token:
+                 try:
+                     self.token = api_token
+                 except AttributeError:
+                     self.log.error("Can't set self.token")
+             settings['page_config_data']['token'] = api_token
  
  
  def main(argv=None):
      return SingleUserLabApp.launch_instance(argv)
  
  
  if __name__ == "__main__":
      main()
  
Add api_token from environment, if it's present.
## Code Before:
from .labapp import LabApp

try:
    from jupyterhub.singleuser import SingleUserNotebookApp
except ImportError:
    SingleUserLabApp = None
    raise ImportError('You must have jupyterhub installed for this to work.')
else:
    class SingleUserLabApp(SingleUserNotebookApp, LabApp):
        def init_webapp(self, *args, **kwargs):
            super().init_webapp(*args, **kwargs)
            settings = self.web_app.settings
            if 'page_config_data' not in settings:
                settings['page_config_data'] = {}
            settings['page_config_data']['hub_prefix'] = self.hub_prefix
            settings['page_config_data']['hub_host'] = self.hub_host
            settings['page_config_data']['hub_user'] = self.user


def main(argv=None):
    return SingleUserLabApp.launch_instance(argv)


if __name__ == "__main__":
    main()

## Instruction:
Add api_token from environment, if it's present.
## Code After:
import os
from .labapp import LabApp

try:
    from jupyterhub.singleuser import SingleUserNotebookApp
except ImportError:
    SingleUserLabApp = None
    raise ImportError('You must have jupyterhub installed for this to work.')
else:
    class SingleUserLabApp(SingleUserNotebookApp, LabApp):

        def init_webapp(self, *args, **kwargs):
            super().init_webapp(*args, **kwargs)
            settings = self.web_app.settings
            if 'page_config_data' not in settings:
                settings['page_config_data'] = {}
            settings['page_config_data']['hub_prefix'] = self.hub_prefix
            settings['page_config_data']['hub_host'] = self.hub_host
            settings['page_config_data']['hub_user'] = self.user
            api_token = os.getenv('JUPYTERHUB_API_TOKEN')
            if not api_token:
                api_token = ''
            if not self.token:
                try:
                    self.token = api_token
                except AttributeError:
                    self.log.error("Can't set self.token")
            settings['page_config_data']['token'] = api_token


def main(argv=None):
    return SingleUserLabApp.launch_instance(argv)


if __name__ == "__main__":
    main()
