Use positional-only parameters for some special methods #108635
Description
Feature or enhancement
Has this already been discussed elsewhere?
No response given
Links to previous discussion of this feature:
No response
Proposal:
Most special methods (double underscored from both sizes) are only called with positional arguments. But some implementations forgot to add / in Argument Clinic description. It makes the code unnecessary complex and prevent using the efficient limited C API for it (Argument Clinic does not yet fully support the limited C API for keyword parameters).
We can just add missed /. No deprecation period is needed as these functions were not purposed to be used with keyword arguments.