Check for None in case we are dealing with an externally launched kernel

Fix #863.
jupyter · Nov 15, 2023 · 20229d6 · 20229d6
1 parent 4f28d1b
commit 20229d6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/qtconsole/qtconsoleapp.py b/qtconsole/qtconsoleapp.py
@@ -191,7 191,7 @@ def new_frontend_master(self):
  # start the kernel
  kwargs = {}
  # FIXME: remove special treatment of IPython kernels
- if self.kernel_manager.ipykernel:
  if self.kernel_manager and self.kernel_manager.ipykernel:
  kwargs['extra_arguments'] = self.kernel_argv
  kernel_manager.start_kernel(**kwargs)
  kernel_manager.client_factory = self.kernel_client_class