Avram <pyt...@avram.us> added the comment:
I looked through a lot of the suggested libraries and they all seemed either
too specific to an implementation or didn't fully implement compatibility. So I
created Prefixed to prove out the implementation of of an expanded format
specification for float would look like.
It implements 3 new format types:
- h: SI Decimal prefix (..., n, μ, m, k, M, G, ...)
- j: IEC Binary prefix (Ki, Mi, Gi, ...)
- J: Shortened IEC Binary prefix (K, M, G, ...)
It also implements a new flag, '!' that will add a space before the prefix.
For now, the math is pretty simple, if you cross a magnitude level it will go
to that prefix. So 999 would be '999' and 1000 would be 1k.
I was thinking another format specification option '%' followed by a digit
could be used to set the threshold of when to switch, so f'{950.0:%5.2h}' would
be '0.95k', but f'{949.0:%5.2h}' would be '949.00'. Was going to think about it
a little more before implementing.
I'd appreciate feedback on the library. Issues can be submitted here:
https://github.com/Rockhopper-Technologies/prefixed/issues
https://pypi.org/project/prefixed/
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nosy: +aviso
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<https://bugs.python.org/issue31749>
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