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Virtual environments isolate Python dependencies to prevent conflicts, allowing clean package management per project.
A beginner-friendly guide on using Virtualenv to create isolated Python environments for managing dependencies and organizing projects efficiently.
Mocking database calls in Flask tests speeds up execution, improves isolation, and removes dependency on the database state, making tests more reliable.
Mocking helps test code in isolation by replacing external dependencies like databases or web services, ensuring reliable and focused unit testing.
The unittest.mock module in Python helps isolate code for testing by replacing dependencies with mock objects, simplifying testing of complex interactions.