On 2/17/24 19:24, dn via Python-list wrote:
On 18/02/24 13:21, Jonathan Gossage wrote:
- perhaps someone knows a better/proper way to do this? Suggested research: custom classes, ABCs, and meta-classes...
Cure the old "what do you want to accomplish" question. If it's to channel access to a resource to a single place, many folks seem to advocate just putting that code in a module, and not trying to use a class for that - Python already treats modules as a form of singleton (if you squint a bit). It's not Java, after all, everything doesn't _have_ to be a class.
I'd also second the idea of looking at metaclasses for an implementation. Most simpler class-based singleton approaches turn out not to be thread-safe... you can get closer to solving that with a metaclass with a lock taken in the dunder-call method.
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