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| author | Sergey B Kirpichev <skirpichev@gmail.com> | 2025-02-25 15:27:07 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-02-25 15:27:07 (GMT) |
| commit | f39a07be47cd9219eaf0e538ae32ad8239c88e66 (patch) | |
| tree | 1b57568378401b44c9ffd8d3f237b13694842b5c /Lib/test/test_format.py | |
| parent | fa6a8140dd2a72da6df2a7dfafbf07045debf64d (diff) | |
| download | cpython-f39a07be47cd9219eaf0e538ae32ad8239c88e66.zip cpython-f39a07be47cd9219eaf0e538ae32ad8239c88e66.tar.gz cpython-f39a07be47cd9219eaf0e538ae32ad8239c88e66.tar.bz2 | |
gh-87790: support thousands separators for formatting fractional part of floats (#125304)
```pycon
>>> f"{123_456.123_456:_._f}" # Whole and fractional
'123_456.123_456'
>>> f"{123_456.123_456:_f}" # Integer component only
'123_456.123456'
>>> f"{123_456.123_456:._f}" # Fractional component only
'123456.123_456'
>>> f"{123_456.123_456:.4_f}" # with precision
'123456.1_235'
```
Diffstat (limited to 'Lib/test/test_format.py')
| -rw-r--r-- | Lib/test/test_format.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Lib/test/test_format.py b/Lib/test/test_format.py index 9dde63e..3916bc3 100644 --- a/Lib/test/test_format.py +++ b/Lib/test/test_format.py @@ -515,11 +515,15 @@ class FormatTest(unittest.TestCase): error_msg = re.escape("Cannot specify both ',' and '_'.") with self.assertRaisesRegex(ValueError, error_msg): '{:,_}'.format(1) + with self.assertRaisesRegex(ValueError, error_msg): + '{:.,_f}'.format(1.1) def test_with_an_underscore_and_a_comma_in_format_specifier(self): error_msg = re.escape("Cannot specify both ',' and '_'.") with self.assertRaisesRegex(ValueError, error_msg): '{:_,}'.format(1) + with self.assertRaisesRegex(ValueError, error_msg): + '{:._,f}'.format(1.1) def test_better_error_message_format(self): # https://bugs.python.org/issue20524 |