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gh-142019: Add description about the exponent of result formatted with presentation type 'e'. #142084

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hugovk merged 2 commits into from
Dec 16, 2025
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gh-142019: Add description about the exponent of result formatted with presentation type 'e'. #142084

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Add description about the exponent of result formatted with presentat…
1nftf Nov 29, 2025
52adc1a
Add details about formatting float with the e/E symbol by __format__.
1nftf Dec 5, 2025
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5 changes: 5 additions & 0 deletions Doc/library/string.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -546,6 +546,11 @@ The available presentation types for :class:`float` and
| | :class:`float`, and shows all coefficient digits |
| | for :class:`~decimal.Decimal`. If ``p=0``, the decimal |
| | point is omitted unless the ``#`` option is used. |
| | |
| | The number of zeros padding to the exponent is |
| | determined by the implementation. When the coefficient |
| | is zero, the exponent value is also determined by the |
| | implementation. |
+---------+----------------------------------------------------------+
| ``'E'`` | Scientific notation. Same as ``'e'`` except it uses |
| | an upper case 'E' as the separator character. |
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