LGTM warning / comments

pyphare/pyphare/core/ipython.py

@@ -1,24 +1,20 @@
 
 # https://stackoverflow.com/a/40222538/795574
 
-# exit_register runs at the end of ipython %run or the end of the python interpreter
 try:
     def exit_register(fun, *args, **kwargs):
-        """ Decorator that registers at post_execute. After its execution it
-        unregisters itself for subsequent runs. """
         def callback():
             fun()
             ip.events.unregister('post_execute', callback)
         ip.events.register('post_execute', callback)
 
+    ip = get_ipython() # should fail if not running under ipython
 
-    ip = get_ipython()
 except NameError:
-    from atexit import register as exit_register
-
-
-# @exit_register
-# def callback():
-#     print('I\'m done!')
+    # forwarding import to keep functionality even if ipython is not in use
+    #  it's possible this isn't even needed, and we just want to execute the callback for only if
+    #    we're running under ipython, in that case, "exit_register" -> "ipython_exit_register" and
+    #     replace the next line with def ipython_exit_register(fun, *args, **kwargs): pass
+    from atexit import register as exit_register # lgtm [py/unused-import]