GCP-Python Playground — Meridian Type Inference

⟨T⟩

GCP Python Type Inference

Write Python functions in library.py — no type hints needed.
In usage_context.py, call those functions with concrete arguments.
GCP propagates types backward from call sites.
Press ⟨T⟩ Infer to see the results.

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Demand-Driven
Types flow backward from call sites to parameter declarations

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Zero Annotations
No need to write def f(x: int) — GCP figures it out

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mypyc Speedup
Annotated code compiles to native C extensions for 2–8× faster execution

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Run ⟨T⟩ Infer to see the GCP-annotated source

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Run Benchmark to compare

CPython · mypyc (bare) · mypyc (GCP-annotated)

Benchmark compiles your code with mypyc — may take 10–30s.

Meridian-Python Playground