micropython / micropython/micropython
PEP448 dict merge syntax not supported
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enhancement
- Dominant language
- C
- Stars
- 22.1k
- Forks
- 9k
- Avg merge
- 6d 4h
- Merged PRs (30d)
- 16
Description
While the PEP584 syntax works fine, the PEP448 version
d = {**a, **b}
works under CPython V3.11.0 but not under MP. Is this deliberate?
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the {**a, **b} example in MicroPython and comparing its behavior with CPython 3.11. Then inspect the parser or compiler entry points responsible for dictionary unpacking; done means PEP448 dictionary unpacking works consistently with the reported CPython behavior, with coverage for the example.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- compilers, embedded-iot
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100