Merge pull request #809 from samhitech/main

Bugfix: stop_headless raises AttributeError #808

Author: henrypinkard

pycromanager/_version.py

@@ -1,2 +1,2 @@
-version_info = (1, 0, 1)
+version_info = (1, 0, 2)
 __version__ = ".".join(map(str, version_info))

pycromanager/acquisition/acq_eng_py/internal/engine.py

@@ -37,6 +37,9 @@ def get_core():
 
     @staticmethod
     def get_instance():
+        if not hasattr(Engine, 'singleton'):
+            return None
+
         return Engine.singleton
 
     def finish_acquisition(self, acq):

pycromanager/headless.py

@@ -58,5 +58,6 @@ def start_headless(
 
 def stop_headless(debug=False):
     terminate_core_instances(debug=debug)
-    Engine.get_instance().shutdown()
+    if Engine.get_instance():
+        Engine.get_instance().shutdown()