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        "author": "Stefan Braun",
        "author_email": "sbraun@datacomm.ch",
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        "description": "# visitoolkit_eventsystem\nminimalistic event system  \n\n**Installation via pip**   \nhttps://pypi.org/project/visitoolkit-eventsystem   \n*(runs on Python 3)*  \n\n\n## description\nRegistered handlers (a bag of handlers) getting called when event gets fired  \nusing ideas from \"axel events\" https://github.com/axel-events/axel  \nand \"event system\" from http://www.valuedlessons.com/2008/04/events-in-python.html\n\n## usage\n```python\nfrom visitoolkit_eventsystem import eventsystem\n\n# handlers are callback functions in your code,\n# when firing an event visitoolkit_eventsystem will call them with the given argument(s)\ndef cb1(event_id, *arg, **args):\n    if event_id > 0:\n        # handle event...\n        return True\n    else:\n        return False\n\n# Default is synchronous execution of handlers (blocking main thread, collecting all results)\n# sync_mode=False means asynchronous execution of handlers (one background thread calls all handlers) \n# =>Details about flag \"exc_info\"(default is True): https://docs.python.org/3/library/sys.html#sys.exc_info\n# =>Flag \"traceback\" (default is False) controls verbosity of error_info when an exception occurred\nes = eventsystem.EventSystem(sync_mode=True)\n\n# adding or removing handlers in list-like syntax\nes += cb1\n\n#The execution result is returned as a list containing all results per handler having this structure:\n#  exec_result = [\n#      (True, result, handler),        # on success\n#      (False, error_info, handler),   # on error\n#      (None, None, handler), ...      # asynchronous execution\n#  ]\n\n# firing event\nresult = es(42)\n```\n\nIncreasing logging level for bughunting:\n```python\nimport logging\nlogging.getLogger('visitoolkit_eventsystem').setLevel(logging.DEBUG)\n```\n\n## background information\n**visitoolkit_eventsystem** is used in **visitoolkit_connector** as core part of **visitoolkit**. \n\n**visitoolkit** is written for the proprietary Building and Process Management System\n'ProMoS NT' (c) MST Systemtechnik AG'  \n(also known as 'Saia Visi.Plus' (c) Saia-Burgess Controls AG) \n\nIntention:  \nSupport creator of visualisation projects...  \nAdd efficiency...  \nReduce manual error-prone processes...  \nAdd missing features...\n\nDisclaimer: Use 'visitoolkit' at your own risk!",
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