mk a écrit : > > does every builtin class have unique id? Classes are objects. And every object *within a python process* has it's own unique id. For a definition of "unique" being "unique amongst the objects living in the process at a given time" - IOW, if an object is garbage-collected, it's id can (and will) be reused. For the record, in CPython, the id value is the address of the (virtual) memory location where the object lives (not that you could do anything of this info from within Python - no pointers here).
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