Kivy KV Loader

A focused developer tool to load Kivy KV files, validate syntax, and inspect the widget tree without executing Python code.

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1,240+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

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About This Tool

This tool analyzes Kivy KV language definitions to produce a static view of the UI structure and syntax health. It accepts KV content or file paths and a minimal execution context, then parses the KV tree and identifies definitions, references, and common errors.
Conceptually, the tool performs syntax validation, builds a hierarchical widget model, and surfaces issues with precise location data to speed debugging. It is designed for developers, QA, and designers who need reliable KV validation without launching an application.
Unique value lies in its deterministic KV analysis pipeline, exportable widget trees, and structured error reports that integrate with CI pipelines. Use cases include validating new KV fragments, comparing widget trees across revisions, and preparing data for tooling that analyzes UI composition.
Core features include KV parsing, widget-tree construction, error localization, static symbol resolution, and export channels (JSON).

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How to Use

Provide kv_content or kv_path
Optionally supply python_context for symbol resolution
Run load and validate KV
Inspect widget_tree and syntax_errors outputs
Export results or apply fixes to project

Frequently Asked Questions

Find Quick Answers

What input formats are supported?

The tool accepts KV language text strings or file paths. It analyzes syntax and widget hierarchy without executing Python code, and reports any unresolved widget references as static analysis notes.

Can it resolve custom widgets defined in Python modules?

If a context with Python module names is provided, the tool attempts to resolve defined symbols statically. It does not import or run modules; unresolved references are reported for further manual resolution.

What outputs are produced?

Outputs include a widget_tree describing widget types and hierarchy, a syntax_errors list with locations, and optional export formats (e.g., JSON) for integration with other tools or CI pipelines.

Is runtime behavior or rendering analyzed?

No. The analysis is static and KV-focused. It does not render UI or execute runtime expressions, but it aims to reveal structural and syntactic issues that would affect runtime UI.

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