modernize-scientific-stack

Migrate Python 2 scientific code to Python 3 by updating syntax (print statements, division), replacing deprecated libraries (ConfigParser → configparser, urllib2 → urllib.request), adopting pathlib for file paths, and adding type hints. Verify results match the original using existing tests and sample data.

Use pandas and numpy for data processing, pathlib for file path handling, and io.StringIO instead of StringIO. Replace csv with pandas for tabular data, pickle for cPickle, and configparser for ConfigParser to align with Python 3 scientific stacks.

Create a verification workflow by running existing tests against migrated code with sample data to confirm identical output. Enforce UTF-8 encoding for all file I/O, use context managers for resource handling, and maintain a requirements.txt documenting dependencies before deployment.

Yes. Pathlib modernizes file handling in Python 3 by replacing os.path for all path manipulations. It provides object-oriented path operations, better cross-platform compatibility, and cleaner syntax than legacy string-based approaches.

Update print statements to functions, fix integer division (/→//), remove unicode literals, replace StringIO and cPickle imports, and migrate ConfigParser usage. Add type hints and use context managers (with statements) for file handling.

No. Keep existing tests and run them against your migrated code to verify identical results. Tests validate that modernization preserves functionality without requiring rewrites if your original test suite covers the core logic.