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-rw-r--r--Lib/decimal.py2
-rw-r--r--Lib/test/test_decimal.py3
-rw-r--r--Misc/NEWS3
3 files changed, 7 insertions, 1 deletions
diff --git a/Lib/decimal.py b/Lib/decimal.py
index e786453..1f5c920 100644
--- a/Lib/decimal.py
+++ b/Lib/decimal.py
@@ -5512,7 +5512,7 @@ def _parse_format_specifier(format_spec, _localeconv=None):
# if format type is 'g' or 'G' then a precision of 0 makes little
# sense; convert it to 1. Same if format type is unspecified.
if format_dict['precision'] == 0:
- if format_dict['type'] in 'gG' or format_dict['type'] is None:
+ if format_dict['type'] is None or format_dict['type'] in 'gG':
format_dict['precision'] = 1
# determine thousands separator, grouping, and decimal separator, and
diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py
index 0be901a..f7f023d 100644
--- a/Lib/test/test_decimal.py
+++ b/Lib/test/test_decimal.py
@@ -760,6 +760,9 @@ class DecimalFormatTest(unittest.TestCase):
(',%', '123.456789', '12,345.6789%'),
(',e', '123456', '1.23456e+5'),
(',E', '123456', '1.23456E+5'),
+
+ # issue 6850
+ ('a=-7.0', '0.12345', 'aaaa0.1'),
]
for fmt, d, result in test_values:
self.assertEqual(format(Decimal(d), fmt), result)
diff --git a/Misc/NEWS b/Misc/NEWS
index 94f4399..fe281cf 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -366,6 +366,9 @@ Core and Builtins
Library
-------
+- Issue #6850: Fix bug in Decimal._parse_format_specifier for formats
+ with no type specifier.
+
- Issue #4937: plat-mac/bundlebuilder revers to non-existing version.plist
- Issue #6838: Use a list to accumulate the value instead of