Handling Circular Imports in Flask with Blueprints: Best Practices
I've spent hours debugging this and I'm stuck on something that should probably be simple. I'm working with an scenario with circular imports when using Flask Blueprints in my application. I have two modules, `module_a.py` and `module_b.py`, where `module_a` imports `module_b` to register a route, and `module_b` imports `module_a` to access a function. This leads to an `ImportError` stating 'want to import name ... from partially initialized module'. I understand that circular imports can be a common scenario in Python, but I am unsure how to resolve it effectively in the context of Flask Blueprints. Here’s a simplified version of my code: **module_a.py:** ```python from flask import Blueprint, jsonify from module_b import get_data # This causes circular import module_a = Blueprint('module_a', __name__) @module_a.route('/data') def data_route(): return jsonify(get_data()) ``` **module_b.py:** ```python from module_a import module_a # This causes circular import def get_data(): return {'message': 'Hello from module B'} ``` I’ve tried reorganizing the code to delay the imports, but it doesn’t seem to solve the scenario. I also considered combining modules, but that feels counterproductive and would break my code structure. Is there a clean way to manage these imports without refactoring everything into a single file? Any best practices for structuring Flask applications to avoid such circular import issues would be greatly appreciated. I'd really appreciate any guidance on this. Any pointers in the right direction? I've been using Python for about a year now. Any advice would be much appreciated.