Python 3.13.2 Migration - Test Mocking Compatibility Issues with Requests and Mock Library

Debashisa patra — Sun, 11 May 2025 15:59:00 +0000

I'm experiencing some challenges while migrating a project from Python 2.7 to Python 3.13.2, specifically with test mocking for HTTP requests.

Context:
Migrating an existing project from Python 2.7 to Python 3.13.2

Using pytest for testing
Custom test mocking utility for HTTP requests
Specific Issue: When running tests, I'm encountering the following error across multiple test cases:
TypeError: FakeRest.perform_request() got an unexpected keyword argument 'verify'

Detailed Observations:
In Python 2.7 (nosetests), all 27 tests passed successfully
In Python 3.13.2 (pytest), 7 out of 27 tests are failing
The primary error is related to an unexpected 'verify' keyword argument

Questions:
How can I modify my custom mock class to handle the 'verify' parameter in Python 3.13.2?
Are there known differences in request mocking between Python 2.7 and Python 3.x?
What are the best practices for updating test mocking utilities during Python version migration?

Relevant Code Snippet (Simplified):

class FakeRest:
def perform_request(self, method, *args, **kwargs):
# Current implementation doesn't handle 'verify' parameter
# Throws TypeError in Python 3.13.2

Desired Outcome:
Make the test mocking compatible with Python 3.13.2
Maintain the existing test logic
Ensure all tests pass

Environment:
Python 3.13.2
pytest 8.3.5
Custom test utilities
Requests library

Any guidance on handling this migration challenge would be greatly appreciated!

https://community.nextwork.org/c/i-have-a-question/python-3-13-2-migration-test-mocking-compatibility-issues-with-requests-and-mock-library

DEV Community: Debashisa patra

Python 3.13.2 Migration - Test Mocking Compatibility Issues with Requests and Mock Library