René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Error throw every time an opening bracket is written","articleBody":"### Prerequisites\r\n\r\n* [x] Please make sure to properly [configure](https://github.com/autocomplete-python/autocomplete-python#configuration) plugin first if you simply cannot see any completions.\r\n* [x] It's always helpful if you include debug logs with your issue:\r\n  * Go to package settings to enable them\r\n  ![image](https://cloud.githubusercontent.com/assets/193864/19852051/01e4e45c-9f9c-11e6-9480-dd22147c82b3.png)\r\n  * Open `dev tools` using command palette and you should see some `autocomplete-python` records in console tab. This will include parts of your code – make sure to remove everything you don't want to share.\r\n\r\n### Steps to Reproduce\r\n\r\n1. Write a bracket, e. g.:  \r\n```\r\nvariable = ()\r\nvariable = []\r\nvariable = {}\r\n```\r\n\r\n**Expected behavior:**  \r\nNo error to be displayed.\r\n\r\n**Actual behavior:**  \r\nError is throw every time by `autocomplete-python`  \r\n![image](https://user-images.githubusercontent.com/23050019/160409267-3acbfc09-2829-47fb-88aa-3670a3ef131f.png)\r\n\r\nNo issues with function definitions and calls, the issue seems to be triggered when single bracket is being written (like when using list comprehensions or declaring variables).\r\n\r\nError text:  \r\n```\r\nautocomplete-python traceback output:\r\n\r\nTraceback (most recent call last):\r\n  File \"/home/driuba/.atom/packages/autocomplete-python/lib/completion.py\", line 381, in watch\r\n    self._process_request(request)\r\n  File \"/home/driuba/.atom/packages/autocomplete-python/lib/completion.py\", line 349, in _process_request\r\n    return self._write_response(self._serialize_tooltip(\r\n  File \"/home/driuba/.atom/packages/autocomplete-python/lib/completion.py\", line 275, in _serialize_tooltip\r\n    'line': definition.line - 1,\r\nTypeError: unsupported operand type(s) for -: 'NoneType' and 'int'\r\n```\r\n\r\n---\r\n\r\nOS info:  \r\n![image](https://user-images.githubusercontent.com/23050019/160408380-e7f9d902-3c25-4760-898d-06a45db00d5e.png)\r\n\r\nAtom info:  \r\n![image](https://user-images.githubusercontent.com/23050019/160408568-70fa72d1-575d-41a7-8d5f-c0484ba3e21f.png)\r\n\r\nautocomplete-python info:  \r\n![image](https://user-images.githubusercontent.com/23050019/160408843-45f286dd-12f4-4e27-bb6e-c4044770d423.png)\r\n\r\n---\r\n\r\nP. S.  \r\nOther functionality works as expected without issues. The error message does not seem to be critical, however it is very annoying as it spams a lot.","author":{"url":"https://github.com/driuba","@type":"Person","name":"driuba"},"datePublished":"2022-03-28T13:39:31.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/465/autocomplete-python/issues/465"}