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: RetroArch’s built-in scanner uses a checksum database to identify games. Only verified ROMs will automatically appear in your playlists with correct titles and box art .

Handling a library of this size requires more than just dumping files into a folder. To get the most out of a massive verified set, follow these best practices: RetroArch can't scan most of my roms - Libretro Forums

: "Verified" often means the ROMset matches a specific core version, such as the MAME 0.78 set required for the lr-mame2003 core.

When you download a single ROM, there is a risk it might be a "bad dump" (corrupted) or a "hack" (modified). Using verified sets ensures:

In the world of retro gaming, a "verified" ROM is a file whose digital signature matches a known "good dump" from official databases like No-Intro or TOSEC. For a collection to reach the 9,000-game mark, it generally includes complete libraries for iconic 8-bit and 16-bit systems, alongside expansive MAME arcade sets . Why "Verified" Status Matters

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The recommended way of using PyDev is bundled in LiClipse, which provides PyDev builtin as well as support for other languages such as Django Templates, Mako, RST, C++, CoffeScript, Dart, HTML, JavaScript, CSS, among others (also, by licensing LiClipse you directly support the development of PyDev).

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Updates & Improvements

It's now possible to use pyright analysis support
pydevd (debugger) updated to 3.4.1
- Preliminary support for debugging with Python 3.14 (still not complete)
Consider @abstractclassmethod and @abstractstaticmethod decorators in code analysis.
Use plain super() in override completion.

Bug Fixes

If a default interpreter cannot be found, the latest Python 3 version is used to parse the code.
- Type definition in non-global scope (inside a method) should not give an error if the token is just found in the TYPE_CHECKING namespace.
- Fixed issues dealing with name store in match where spurious unused variable would be found. #PyDev-1272

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Updates & Improvements

Support for Python 3.13
Support for type alias syntax
Parsing type vars (still missing semantic analysis).
Support for Annotated[cls] in code-completion
Added condition to resolve as True|False in templates
Updated typeshed
Updated PyDev debugger (pydevd) to version 3.3.0
Updated minimum Java version requirement to Java 17
Changed ruff linting command to ruff check to match breaking change
Improved docstring assist to properly handle multi-line function signatures
Converted paragraph wrapping functionality from Jython to Java
Changed "Surround with try..except" to use try..except Exception as default
Supporting trailing commas in multi-line with statements

Bug Fixes

Fixed recursion error that could occur during interpreter restoration
Fixed with_statement import handling in auto-import
Fixed issue where local imports were incorrectly placed within arguments
Fixed issue with paragraph wrapping on last line
Fixed exception handling for project configuration variables
Improved logging to avoid stack traces for non-error messages

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Fixed issue parsing await inside of case block.

Call django.setup() when running django unit-tests (with builtin unittest runner).

Fixed corner case where conftest.py wouldn't be properly gotten with previous approach when running pytest.

Template variables converted from jython to java code (pytemplate_defaults.py).

Properly building With Eclipse 2024-03 (fixes by Florian Kroiß).

Using flake8 binary instead of getting from python works (fix by slaclau).

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Only Python 3.8 onwards is now supported

Python 3.6 and 3.7 support is now dropped (please use PyDev 11.0.3 if you still use it).

Debugger

sys.monitoring is now used in Python 3.12 (and it's much faster than any previous version).
A new setting was added in the Preferences > PyDev > Debug to debug just my code (meaning that when stepping it will just step into files under PyDev source folders).
Improved the step into function (activated with Ctrl+Alt then Click function to step into).
Support for Python 3.6 and 3.7 was dropped (only Python 3.8 onwards is now supported).

Ruff

Ruff can now be used as a code formatter.
The latest ruff (0.1.x) is now supported (as it broke backward compatibility in its 0.1.0 version).

Code Analysis

Fixes in semantic analysis to better determine if strings in annotations should be checked for symbols or not.