def start(self):
     from ipyparallel.nbextension.install import install_extensions
     if len(self.extra_args) != 1:
         self.exit("Must specify 'enable' or 'disable'")
     action = self.extra_args[0].lower()
     if action == 'enable':
         print("Enabling IPython clusters tab")
         install_extensions(enable=True, user=self.user)
     elif action == 'disable':
         print("Disabling IPython clusters tab")
         install_extensions(enable=False, user=self.user)
     else:
         self.exit("Must specify 'enable' or 'disable', not '%s'" % action)
 def start(self):
     from ipyparallel.nbextension.install import install_extensions
     if len(self.extra_args) != 1:
         self.exit("Must specify 'enable' or 'disable'")
     action = self.extra_args[0].lower()
     if action == 'enable':
         print("Enabling IPython clusters tab")
         install_extensions(enable=True, user=self.user)
     elif action == 'disable':
         print("Disabling IPython clusters tab")
         install_extensions(enable=False, user=self.user)
     else:
         self.exit("Must specify 'enable' or 'disable', not '%s'" % action)