[Python] Optimize Offset/Pad/Prep: use cached head and slicing #8808
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satur9nine
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Part 2 of 3
Optimize Offset/Pad/Prep: use cached head and slicing
This is a break-up of #8766
Improves performance of the PythonTest over part 1 by 15.5%
python-perf-startup.txt
python-perf-prep.txt