Merge Eric's proposal into proposal II.
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pep-0378.txt
54
pep-0378.txt
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@ -119,23 +119,29 @@ and decimal point::
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format(1234.5, "08,.1f") --> '01,234.5'
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Proposal II (to meet Antoine Pitrou's request)
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==============================================
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Proposal II (from Eric Smith)
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=============================
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Make both the thousands separator and decimal separator user
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specifiable but not locale aware. For simplicity, limit the
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choices to a comma, period, space, or underscore.
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choices to a COMMA, DOT, SPACE, or UNDERSCORE.
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[[fill]align][sign][#][0][width][T[tsep]][dsep precision][type]
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Whenever the separator is followed by a precision, it is a
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decimal separator and the optional separator preceding it is a
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thousands separator. When the precision is absent, the
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context is integral and a lone specifier means a thousands
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separator::
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[[fill]align][sign][#][0][width][tsep|([tsep] dsep precision)][type]
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Examples::
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format(1234, "8.1f") --> ' 1234.0'
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format(1234, "8,1f") --> ' 1234,0'
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format(1234, "8T.,1f") --> ' 1.234,0'
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format(1234, "8T ,f") --> ' 1 234,0'
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format(1234, "8d") --> ' 1234'
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format(1234, "8T,d") --> ' 1,234'
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format(1234, "8.1f") --> ' 1234.0'
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format(1234, "8,1f") --> ' 1234,0'
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format(1234, "8.,1f") --> ' 1.234,0'
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format(1234, "8 ,f") --> ' 1 234,0'
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format(1234, "8d") --> ' 1234'
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format(1234, "8,d") --> ' 1,234'
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This proposal meets mosts needs (except for people wanting
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grouping for hundreds or ten-thousands), but it comes at the
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@ -150,34 +156,6 @@ length including the thousands separators and decimal separators.
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No change is proposed for the locale module.
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Proposal III (from Eric Smith: like II but without the T)
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=========================================================
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In the second proposal, the *T* isn't strictly necessary.
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In the context of an integer, an optional single specifier means
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a thousands separator. In the context of a float, a single
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specifier is a decimal separator while two specifiers are taken
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as a thousands separator and a decimal separator::
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[[fill]align][sign][#][0][width][tsep][dsep precision][type]
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Examples::
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format(1234, "8.1f") --> ' 1234.0'
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format(1234, "8,1f") --> ' 1234,0'
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format(1234, "8.,1f") --> ' 1.234,0'
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format(1234, "8 ,f") --> ' 1 234,0'
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format(1234, "8d") --> ' 1234'
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format(1234, "8,d") --> ' 1,234'
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This is a cleaner looking syntax but has the minor disadvantage of
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using context to direct the translation. Whenever the separator
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is followed by a precision, it is a decimal separator and the separator
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preceding it is a thousands separator. When the precision is
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absent, the context is integral and a lone specifier means
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a thousands separator.
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Other Ideas
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===========
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