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Title: Align object.__sizeof__ with CPython for ints by Copilot · Pull Request #6516 · RustPython/RustPython · GitHub

Open Graph Title: Align object.__sizeof__ with CPython for ints by Copilot · Pull Request #6516 · RustPython/RustPython

X Title: Align object.__sizeof__ with CPython for ints by Copilot · Pull Request #6516 · RustPython/RustPython

Description: The base object.__sizeof__ returned only the type basic size, underreporting memory for variable-sized ints compared to CPython. Int-aware sizing: object.__sizeof__ now calculates int sizes using the same bit-length-based formula as int.__sizeof__, ensuring parity for arbitrary-sized integers. Regression guard: Added a snippet test to assert object.__sizeof__ is never smaller than int.__sizeof__ for a very large integer. Example: big = 10**200 assert object.__sizeof__(big) >= big.__sizeof__() # matches CPython-style sizing Original prompt This section details on the original issue you should resolve object.__sizeof__ is not compatible with CPython implementation When you run the below code, you can see the difference. ⬇️ # RustPython >>>>> object.__sizeof__(1223456789812391231291231231231212312312312312312312321321321321312312321123123123199129391239219394923912949213021949302194942130123949203912430392402139210492139123012940219394923942395943856228368385) 32 # CPython >>> object.__sizeof__(1223456789812391231291231231231212312312312312312312321321321321312312321123123123199129391239219394923912949213021949302194942130123949203912430392402139210492139123012940219394923942395943856228368385) 116 Plan (tracking) Correct object.__sizeof__ implementation. (#356, #3421) Make types to set its ob_size. int deque TODO Investigate why the size is different and try to properly implement it Comments on the Issue (you are @copilot in this section) Fixes #3743 💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

Open Graph Description: The base object.__sizeof__ returned only the type basic size, underreporting memory for variable-sized ints compared to CPython. Int-aware sizing: object.__sizeof__ now calculates int sizes using ...

X Description: The base object.__sizeof__ returned only the type basic size, underreporting memory for variable-sized ints compared to CPython. Int-aware sizing: object.__sizeof__ now calculates int sizes using ...

Opengraph URL: https://github.com/RustPython/RustPython/pull/6516

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