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findlinestarts

dis

function (source)

findlinestarts(code)

Find the offsets in a byte code which are start of lines in the source.

Generate pairs (offset, lineno)
lineno will be an integer or None the offset does not have a source line.

© Python Software Foundation. PSF License Version 2 · Official docs ↗

Changed in 3.6, 3.10, 3.13

3.6: Line numbers can be decreasing. Before, they were always increasing.
3.10: The PEP 626 co_lines() method is used instead of the co_firstlineno and codeobject.co_lnotab attributes of the code object.
3.13: Line numbers can be None for bytecode that does not map to source lines.