>> You mean every time you access a list or dictionary or class
>> instance, you have to acquire a mutex? That sounds like a horrible
>> slowdown.
Steve> Indeed it would, but hey, let's not let that stop us repeating
Steve> the thinking that's gone into CPython over the last fifteen
Steve> years. "Those who cannot remember the past are condemned to
Steve> repeat it".
Also, every object is mutable at some level. Tuples, ints and floats are
definitely mutable at creation time. You need to hold a mutex then, so
Carl's notion of three types of objects breaks down then.
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