Show reports from previously executed tasks on KeyboardInterrupt.

docs/changes.rst

@@ -18,6 +18,8 @@ all releases are available on `PyPI <https://pypi.org/project/pytask>`_ and
 - :gh:`118` makes the path to the configuration in the session header os-specific.
 - :gh:`119` changes that when marker or keyword expressions are used to select tasks,
   also the predecessors of the selected tasks will be executed.
+- :gh:`120` implements that a single ``KeyboardInterrupt`` stops the execution and
+  previously collected reports are shown.
 
 
 0.0.16 - 2021-06-25

src/_pytask/execute.py

@@ -14,6 +14,7 @@
 from _pytask.nodes import FilePathNode
 from _pytask.report import ExecutionReport
 from _pytask.shared import reduce_node_name
+from _pytask.traceback import remove_traceback_from_exc_info
 from rich.traceback import Traceback
 
 
@@ -67,6 +68,10 @@ def pytask_execute_task_protocol(session, task):
         session.hook.pytask_execute_task_setup(session=session, task=task)
         session.hook.pytask_execute_task(session=session, task=task)
         session.hook.pytask_execute_task_teardown(session=session, task=task)
+    except KeyboardInterrupt:
+        short_exc_info = remove_traceback_from_exc_info(sys.exc_info())
+        report = ExecutionReport.from_task_and_exception(task, short_exc_info)
+        session.should_stop = True
     except Exception:
         report = ExecutionReport.from_task_and_exception(task, sys.exc_info())
     else:

src/_pytask/live.py

@@ -167,5 +167,4 @@ def _generate_status(self):
         if self._n_errors > 0:
             msg += f" {self._n_errors} errors."
         status = Status(msg, spinner="dots")
-        status._name = "collection_status"
         return status

src/_pytask/logging.py

@@ -97,4 +97,6 @@ def _style_infos(infos: List[Tuple[Any]]) -> str:
     for value, description, color in infos:
         if value:
             message.append(f"[{color}]{value} {description}[/]")
+    if not message:
+        message = ["nothing to report"]
     return ", ".join(message)