Issue #6857: Fix Decimal formatting to be consistent with existing float
formatting: both are now right-aligned by default.
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@ -5497,7 +5497,10 @@ def _parse_format_specifier(format_spec, _localeconv=None):
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raise ValueError("Alignment conflicts with '0' in "
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"format specifier: " + format_spec)
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format_dict['fill'] = fill or ' '
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format_dict['align'] = align or '<'
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# PEP 3101 originally specified that the default alignment should
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# be left; it was later agreed that right-aligned makes more sense
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# for numeric types. See http://bugs.python.org/issue6857.
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format_dict['align'] = align or '>'
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# default sign handling: '-' for negative, '' for positive
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if format_dict['sign'] is None:
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@ -712,6 +712,7 @@ class DecimalFormatTest(unittest.TestCase):
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('', '1.00', '1.00'),
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# test alignment and padding
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('6', '123', ' 123'),
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('<6', '123', '123 '),
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('>6', '123', ' 123'),
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('^6', '123', ' 123 '),
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@ -741,7 +742,7 @@ class DecimalFormatTest(unittest.TestCase):
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(',', '-1234567', '-1,234,567'),
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(',', '-123456', '-123,456'),
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('7,', '123456', '123,456'),
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('8,', '123456', '123,456 '),
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('8,', '123456', ' 123,456'),
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('08,', '123456', '0,123,456'), # special case: extra 0 needed
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('+08,', '123456', '+123,456'), # but not if there's a sign
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(' 08,', '123456', ' 123,456'),
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@ -366,6 +366,9 @@ Core and Builtins
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Library
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-------
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- Issue #6857: Default format() alignment should be '>' for Decimal
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instances.
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- Issue #6795: int(Decimal('nan')) now raises ValueError instead of
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returning NaN or raising InvalidContext. Also, fix infinite recursion
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in long(Decimal('nan')).
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