params is an optional list of key=value assignments, separated by the : character. Example: id=xyz123:foo=bar:baz=quux. Currently only the id key is defined, see below. These parameters allow future extendability of this feature. In the typical case no parameters are defined, in that case obviously the two semicolons have to be present next to each other.
2026-03-10: The original text said "Early results are modest (single-digit percent improvements)" -- implying the 3.13 JIT was already delivering gains. Changed to "Early results in 3.13 show no improvement on most benchmarks." Bad wording on my part -- 3.13 JIT shows no speedup (and can be slightly slower). The speedups are coming in 3.15: Savannah Ostrowski's preliminary FastAPI benchmarks show ~8% improvement on 3.15 (see also doesjitgobrrr.com). Thanks to Fidget-Spinner (CPython core developer working on the JIT) for the correction.，更多细节参见吃瓜网
In the longer term, air source heat pumps might be the more reliable alternative where the cost of electricity to power the heat exchangers is regulated.，这一点在谷歌中也有详细论述
Act Three: Choking on Natives (V3.0)，这一点在超级权重中也有详细论述
Фото: Владимир Астапкович / РИА Новости