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Migrating Python.md

Question:

How do I migrate from Python 2.7 to Python 2.8 ?

Answer:

Migrating from Python 2.7 to Python 3 is a crucial step, especially since Python 2 reached its official end-of-life at the start of 2020. Here's a guide to help you transition your code:

1. Assess Your Codebase:

   • Focus on supporting Python 2.7 initially.
   • Ensure you have good test coverage (you can use coverage.py for this).
   • Familiarize yourself with the differences between Python 2 and 3.

2. Use Futurize or Modernize:

   • Install the future package using python -m pip install future.
   • Use Futurize (or Modernize) to update your code. For example:

     python -m pip install future
     python -m pip install pylint
     python -m pip install caniusepython3
     python -m pip install tox
     python -m pip install mypy
     

   • These tools will help you make your code compatible with both Python 2 and 3.

3. Specify Python Versions in setup.py:

   • In your setup.py file, specify the proper trove classifier to indicate which versions of Python you support. Since your project doesn't yet support Python 3, include:

     Programming Language :: Python :: 2 :: Only
     

Remember that even if you're forced to support Python 2 due to dependencies, embracing Python 3 practices can lead to cleaner code. Ideally, focus on Python 2.7 compatibility, as it was the last supported version of Python 2. If possible, skip Python 2.5 and older versions to minimize changes in your codebase. 🐍🔀

For more detailed information, refer to the official Python 3 documentation ¹.

Source: Conversation with Bing, 2/9/2024

(1) How to port Python 2 Code to Python 3. https://docs.python.org/3/howto/pyporting.html.
(2) How to update system python 2.7 to 3.x in Ubuntu 20.x after upgrade. https://askubuntu.com/questions/1277240/how-to-update-system-python-2-7-to-3-x-in-ubuntu-20-x-after-upgrade.
(3) Python 2.7 to 3.X Migration Guide: How to Port from Python 2 ... - STX Next. https://www.stxnext.com/blog/python-3-migration-guide/.
(4) Upgrading Python 2.7 to 3.8 : Recommended? - Ask Different. https://apple.stackexchange.com/questions/409331/upgrading-python-2-7-to-3-8-recommended.
(5) Convert python 2.7 to python 3.8 - Stack Overflow. https://stackoverflow.com/questions/61097855/convert-python-2-7-to-python-3-8.
(6) undefined. https://pythonconverter.com/.