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Commitbf0f306

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gh-100428: Make float documentation more accurate (GH-100437)
Previously, the grammar did not accept `float("10")`.Also implement mdickinson's suggestion of removing the indirection.(cherry picked from commit2e1a9ce)Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
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‎Doc/library/functions.rst

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@@ -649,20 +649,23 @@ are always available. They are listed here in alphabetical order.
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sign may be ``'+'`` or ``'-'``; a ``'+'`` sign has no effect on the value
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produced. The argument may also be a string representing a NaN
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(not-a-number), or positive or negative infinity. More precisely, the
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input must conform to thefollowing grammar after leading and trailing
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whitespace characters are removed:
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input must conform to the``floatvalue`` production rule in the following
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grammar, after leading and trailingwhitespace characters are removed:
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..productionlist::float
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sign: "+" | "-"
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infinity: "Infinity" | "inf"
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nan: "nan"
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numeric_value: `floatnumber` | `infinity` | `nan`
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numeric_string: [`sign`] `numeric_value`
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Here ``floatnumber`` is the form of a Python floating-point literal,
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described in:ref:`floating`. Case is not significant, so, for example,
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"inf", "Inf", "INFINITY", and "iNfINity" are all acceptable spellings for
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positive infinity.
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digitpart: `digit` (["_"] `digit`)*
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number: [`digitpart`] "." `digitpart` | `digitpart` ["."]
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exponent: ("e" | "E") ["+" | "-"] `digitpart`
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floatnumber: number [`exponent`]
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floatvalue: [`sign`] (`floatnumber` | `infinity` | `nan`)
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Here ``digit`` is a Unicode decimal digit (character in the Unicode general
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category ``Nd``). Case is not significant, so, for example, "inf", "Inf",
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"INFINITY", and "iNfINity" are all acceptable spellings for positive
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infinity.
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Otherwise, if the argument is an integer or a floating point number, a
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floating point number with the same value (within Python's floating point

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