Fix circular import

Author: davidbrochart

nbclient/exceptions.py

@@ -22,7 +22,7 @@ def error_from_timeout_and_cell(
             cls,
             msg: str,
             timeout: int,
-            cell: NotebookNode) -> CellTimeoutError:
+            cell: NotebookNode):
         if cell and cell.source:
             src_by_lines = cell.source.strip().split("\n")
             src = (
@@ -81,7 +81,7 @@ def __unicode__(self) -> str:
     def from_cell_and_msg(
             cls,
             cell: NotebookNode,
-            msg: Dict) -> CellExecutionError:
+            msg: Dict):
         """Instantiate from a code cell object and a message contents
         (message is either execute_reply or error)
         """

nbclient/output_widget.py

@@ -3,7 +3,6 @@
 from typing import Dict, List, Any, Optional
 
 from jupyter_client.client import KernelClient
-from nbclient import NotebookClient
 
 
 class OutputWidget:
@@ -13,12 +12,12 @@ def __init__(
             comm_id: str,
             state: Dict[str, Any],
             kernel_client: KernelClient,
-            executor: NotebookClient) -> None:
+            executor) -> None:
 
         self.comm_id: str = comm_id
         self.state: Dict[str, Any] = state
         self.kernel_client: KernelClient = kernel_client
-        self.executor: NotebookClient = executor
+        self.executor = executor
         self.topic: bytes = ('comm-%s' % self.comm_id).encode('ascii')
         self.outputs: List = self.state['outputs']
         self.clear_before_next_output: bool = False