Add modern Python feature modules (3.8-3.11)

[Copilot]

Creating 5 New Python Feature Modules ✅

Summary

Successfully created 5 new educational Python modules demonstrating modern Python features (3.8-3.11) with comprehensive examples, extensive comments, and adherence to repository standards.

Completed Tasks:

• Create ultimatepython/syntax/walrus_operator.py - Assignment expressions (PEP 572, Python 3.8+)
• Create ultimatepython/syntax/arg_enforcement.py - Positional & keyword argument enforcement (PEP 570/3102)
• Create ultimatepython/data_structures/dict_union.py - Dict merging (PEP 584, Python 3.9+)
• Create ultimatepython/advanced/pattern_matching.py - Structural pattern matching (PEP 634, Python 3.10+)
• Create ultimatepython/advanced/exception_groups.py - Exception groups (PEP 654, Python 3.11+)
• Update all 8 README files with properly localized links
• Testing & Validation - All modules pass runner.py and CodeQL security scans
• Address code review feedback - Fixed implicit return warnings in pattern matching functions

Recent Changes:

• Added unreachable return statements to check_value, process_range, and process_json_data functions to help type checkers understand that match statements with case _: are exhaustive
• All return statements marked with # pragma: no cover as they are unreachable but improve static analysis

Files Created (5 modules):

1. ultimatepython/syntax/walrus_operator.py (4,990 bytes)
2. ultimatepython/syntax/arg_enforcement.py (8,196 bytes)
3. ultimatepython/data_structures/dict_union.py (6,671 bytes)
4. ultimatepython/advanced/pattern_matching.py (10,812 bytes)
5. ultimatepython/advanced/exception_groups.py (11,714 bytes)

Files Modified: 8 READMEs + pattern_matching.py

Total additions: ~42KB of educational content

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[Copilot]

Pull Request Overview

This pull request adds five new educational modules demonstrating modern Python features introduced in versions 3.8-3.11, enhancing the learning resources available in the repository.

Key Changes:

• Added syntax modules for walrus operator (:=) and argument enforcement (/, *)
• Added dictionary union operators module (|, |=) for data structures
• Added advanced modules for pattern matching (match/case) and exception groups (ExceptionGroup, except*)

Reviewed Changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 15 comments.

Show a summary per file

File	Description
ultimatepython/syntax/walrus_operator.py	Demonstrates assignment expressions with comprehensive examples in loops and comprehensions
ultimatepython/syntax/arg_enforcement.py	Explains positional-only and keyword-only parameter enforcement with practical examples
ultimatepython/data_structures/dict_union.py	Covers dictionary merge operators with practical configuration merging use cases
ultimatepython/advanced/pattern_matching.py	Illustrates structural pattern matching with literals, sequences, classes, and guards
ultimatepython/advanced/exception_groups.py	Shows concurrent exception handling with except* syntax and practical examples
README.md	Added links to new modules in English README
README.de.md	Added links to new modules in German README
README.es.md	Added links to new modules in Spanish README
README.fr.md	Added links to new modules in French README with escaped apostrophes
README.hi.md	Added links to new modules in Hindi README
README.ko.md	Added links to new modules in Korean README
README.pt_br.md	Added links to new modules in Brazilian Portuguese README
README.zh_tw.md	Added links to new modules in Traditional Chinese README

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[codecov]

Codecov Report

❌ Patch coverage is 99.30716% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 99.81%. Comparing base (4a190e8) to head (4a7b5c3).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
ultimatepython/syntax/walrus_operator.py	93.75%	0 Missing and 3 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##              main     #146      +/-   ##
===========================================
- Coverage   100.00%   99.81%   -0.19%     
===========================================
  Files           36       40       +4     
  Lines         1153     1586     +433     
  Branches        62      109      +47     
===========================================
+ Hits          1153     1583     +430     
- Partials         0        3       +3     

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[Copilot]

Pull Request Overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 4 comments.

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[Copilot]

Pull Request Overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 4 comments.

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[Copilot]

@huangsam Unfortunately I hit an unexpected error while processing your comment. I've automatically reported this to GitHub.

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