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Python 3 is the latest version of the Python programming language and was formally released on December 3rd, 2008. Use this tag along with the main python tag to denote programs that are meant to be run on a Python 3 interpreter only. Do not mix this tag with the python-2.x tag.

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Python3: using generator to process a very large list of integers

I would guess the biggest slowdowns are the append and list functions. In your second example, you attempt to pre-create a list, which is a good idea, but a) you use the wrong size, and b) you never u …
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