SIFR-PYCALL-0001: A Python declaration or call shape is unsupported or incompatible. - Sifr

SIFR-PYCALL-0001 belongs to the Embedded Python calls diagnostic family. It means: a Python declaration or call shape is unsupported or incompatible.

Why It Happens

A Python callable, attribute, item, or coroutine operation failed the Sifr bridge contract. Align call shape, await usage, and attribute/item access with the declared Python surface.

Use sifr --explain SIFR-PYCALL-0001 locally to see the renderer’s exact message template and any machine-applicable suggestions for the compiler version you are running.

Details

Field	Value
Code	`SIFR-PYCALL-0001`
Family	`PYCALL`
Severity	Error
Stability	stable
Owner	`sifr_lowering`
Representative fixture	`crates/sifr_lowering/src/lower/python_interop_tests.rs::invalid_python_declaration_shape_reports_pycall_0001`

See the Error Codes index for the complete catalog.