Fix another legacy Python compatibility issue

[aisk]

Summary by CodeRabbit

• Refactor
  • Improved import organization in the Thrift library for better compatibility with Python standards.

[coderabbitai]

Walkthrough

The recent update focuses on enhancing compatibility with Python standards by refining the import strategy in the thriftpy2 library. Specifically, it restructures how modules from importlib—util and abc—are imported and adapts the ThriftImporter class definition accordingly. This adjustment ensures smoother integration and compliance with Python's evolving ecosystem.

Changes

File(s)	Change Summary
thriftpy2/hook.py	Reorganized importlib.util and importlib.abc imports; adjusted ThriftImporter class definition.

🐇✨
In the realm of code, where changes abound,
A rabbit hopped in, with a soft, gentle sound.
"Let's tidy up imports," it said with a grin,
"For cleaner, clearer paths, let's begin."
With a twitch of its nose, and a flick of its ear,
Compatibility's championed, with nothing to fear.
🎉🐾

Thank you for using CodeRabbit. We offer it for free to the OSS community and would appreciate your support in helping us grow. If you find it useful, would you consider giving us a shout-out on your favorite social media?

Share

• X
• Mastodon
• Reddit
• LinkedIn

---

Tips

Chat

There are 3 ways to chat with CodeRabbit:

• Review comments: Directly reply to a review comment made by CodeRabbit. Example:
  • I pushed a fix in commit <commit_id>.
  • Generate unit-tests for this file.
• Files and specific lines of code (under the "Files changed" tab): Tag @coderabbitai in a new review comment at the desired location with your query. Examples:
  • @coderabbitai generate unit tests for this file.
  • @coderabbitai modularize this function.
• PR comments: Tag @coderabbitai in a new PR comment to ask questions about the PR branch. For the best results, please provide a very specific query, as very limited context is provided in this mode. Examples:
  • @coderabbitai generate interesting stats about this repository from git and render them as a table.
  • @coderabbitai show all the console.log statements in this repository.
  • @coderabbitai read src/utils.ts and generate unit tests.
  • @coderabbitai read the files in the src/scheduler package and generate a class diagram using mermaid and a README in the markdown format.

Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments.

CodeRabbit Commands (invoked as PR comments)

• @coderabbitai pause to pause the reviews on a PR.
• @coderabbitai resume to resume the paused reviews.
• @coderabbitai review to trigger a review. This is useful when automatic reviews are disabled for the repository.
• @coderabbitai resolve resolve all the CodeRabbit review comments.
• @coderabbitai help to get help.

Additionally, you can add @coderabbitai ignore anywhere in the PR description to prevent this PR from being reviewed.

CodeRabbit Configration File (.coderabbit.yaml)

• You can programmatically configure CodeRabbit by adding a .coderabbit.yaml file to the root of your repository.
• The JSON schema for the configuration file is available here.
• If your editor has YAML language server enabled, you can add the path at the top of this file to enable auto-completion and validation: # yaml-language-server: $schema=https://coderabbit.ai/integrations/coderabbit-overrides.v2.json

CodeRabbit Discord Community

Join our Discord Community to get help, request features, and share feedback.

[coderabbitai]

Review Status

Actionable comments generated: 0

Configuration used: CodeRabbit UI

Commits

Files that changed from the base of the PR and between 42eb038 and 847735f.

Files selected for processing (1)

• thriftpy2/hook.py (1 hunks)

Additional comments: 5

thriftpy2/hook.py (5)

• 15-15: The import of importlib.util is correctly placed within the version check for Python 3.4 and above, ensuring compatibility with both legacy and modern Python versions. This is a good practice for maintaining backward compatibility.
• 15-15: The import of importlib.abc is also correctly scoped within the Python version check. This ensures that the code only attempts to use importlib.abc where it is available, aligning with the goal of maintaining compatibility across Python versions.
• 3-18: > 📝 NOTE

This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [17-28]

The ThriftImporter class is correctly defined as a MetaPathFinder for Python versions 3.4 and above. This use of importlib.abc.MetaPathFinder and importlib.util.spec_from_loader is appropriate for the dynamic loading of modules and adheres to modern Python standards for module import and loading. However, it's important to ensure that the ThriftLoader class, referenced in spec_from_loader, is properly defined and compatible with the expected interface.

• 3-18: > 📝 NOTE

This review was outside the diff hunks, and no overlapping diff hunk was found. Original lines [34-44]

For Python versions below 3.4, the ThriftImporter class is defined without extending importlib.abc.MetaPathFinder, which is appropriate given the version compatibility requirements. However, it's crucial to ensure that the methods find_module and load_module are correctly implemented and tested across the supported legacy Python versions to prevent runtime errors.

• 3-18: > 📝 NOTE

This review was outside the diff hunks, and no overlapping diff hunk was found. Original lines [46-54]

The installation and removal of the import hook using install_import_hook and remove_import_hook functions are correctly implemented. These functions manipulate sys.meta_path to add or remove the custom importer, which is a standard approach for customizing module import behavior in Python. It's important to ensure that these functions are called appropriately within the application to activate and deactivate the custom import logic as needed.