#28280: numberformat.format does not handle scientific notation correctly
---------------------------+------------------------------------
Reporter: Wil Tan | Owner: nobody
Type: Bug | Status: new
Component: Utilities | Version: 1.11
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
---------------------------+------------------------------------
Changes (by Tim Graham):
* component: Uncategorized => Utilities
* type: Uncategorized => Bug
* stage: Unreviewed => Accepted
Old description:
> For floats with values larger than 1e16 or smaller than 1e-5, their
> string representation uses scientific notation in Python, which causes
> {{{numberformat.format}}} to return an erroneous output.
>
> {{{
> >>> format(0.0000000000000000009, '.', 2)
> '9e-19.00'
> >>> format(1e16, '.', 2, thousand_sep=',', grouping=3,
> force_grouping=True)
> '1e,+16.00'
> }}}
>
> This is similar to #23935 but that was only fixed for Decimal types.
New description:
For floats with values larger than 1e16 or smaller than 1e-5, their string
representation uses scientific notation in Python, which causes
{{{numberformat.format}}} to return an erroneous output.
{{{
>>> from django.utils.numberformat import format
>>> format(0.0000000000000000009, '.', 2)
'9e-19.00'
>>> format(1e16, '.', 2, thousand_sep=',', grouping=3,
force_grouping=True)
'1e,+16.00'
}}}
This is similar to #23935 but that was only fixed for Decimal types.
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Ticket URL: <https://code.djangoproject.com/ticket/28280#comment:1>
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