Micro-optimize _to_rgba_no_colorcycle. #30020
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timhoffm
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May 6, 2025
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QuLogic
reviewed
May 7, 2025
lib/matplotlib/colors.py
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| return (*[n / 0xff for n in bytes.fromhex(c[1:])], | ||
| alpha if alpha is not None else 1.) | ||
| elif len(c) == 4: # #rgb hex format, shorthand for #rrggbb. | ||
| return (*[int(n, 16) * 0x11 / 0xff for n in c[1:]], |
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This is just ?
Suggested change
| return (*[int(n, 16) * 0x11 / 0xff for n in c[1:]], | |
| return (*[int(n, 16) / 0xf for n in c[1:]], |
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ah indeed, even better.
timhoffm
approved these changes
May 7, 2025
This patch speeds up conversions of `#rgba`-type formats by between 25% and 40% (while shortening the implementation), although real benefits should be limited because of caching in to_rgba.
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This patch speeds up conversions of
#rgba-type formats by between 25% and 40% (while shortening the implementation), although real benefits should be limited because of caching in to_rgba.PR summary
PR checklist