BTW, this optimization also makes some old optimization tricks obsolete.
1. No need to write 'def func(len=len)'. Globals lookups will be fast. 2. No need to save bound methods: obj = [] obj_append = obj.append for _ in range(10**6): obj_append(something)This hand-optimized code would only be marginally faster, because of LOAD_METHOD and how it's cached.
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