Dot notation (obj.x.y.z) for nested objects and dictionaries in Python
Simple implementations of nested_getattr(obj, attr, default), nested_setattr(obj, attr, val) and nested_dict_get(dictionary, dotted_key).
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Remotely debug a Python app inside a Docker container in Visual Studio Code
In this article, we are going to debug a Flask app inside a local Docker container through VS Code's fancy debugger, and simultaneously we are still able to leverage Flask's auto-reloading mechanism. It should apply to other Python apps.
MongoDB cookbook: Indexes
The order of fields in an index matters, you must consider Index Cardinality and Selectivity. Instead, the order of fields in a find() query doesn't affect whether it can use an index or not.
MongoDB cookbook: Queries and Aggregations
Frequently accessed items are cached in memory, so that MongoDB can provide optimal response time.
Run a Celery task at a specific time
You are able to run any Celery task at a specific time through eta (means "Estimated Time of Arrival") parameter.