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support accessing the current local datetime in format strings

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{_now}, {_now:%Y-%m-%d}, etc
(#1968)
This commit is contained in:
Mike Fährmann
2021-10-30 21:34:28 +02:00
parent dad2875a3e
commit 46e17c5e61
2 changed files with 27 additions and 5 deletions
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20
test/test_formatter.py
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@@ -173,13 +173,31 @@ class TestFormatter(unittest.TestCase):
self._run_test("{d[a]:?</>/L1/too long/}", "<too long>")
self._run_test("{d[c]:?</>/L5/too long/}", "")
def test_environ(self):
def test_globals_env(self):
os.environ["FORMATTER_TEST"] = value = self.kwdict["a"]
self._run_test("{_env[FORMATTER_TEST]}" , value)
self._run_test("{_env[FORMATTER_TEST]!l}", value.lower())
self._run_test("{z|_env[FORMATTER_TEST]}", value)
def test_globals_now(self):
fmt = formatter.parse("{_now}")
out1 = fmt.format_map(self.kwdict)
self.assertRegex(out1, r"^\d{4}-\d\d-\d\d \d\d:\d\d:\d\d(\.\d+)?$")
out = formatter.parse("{_now:%Y%m%d}").format_map(self.kwdict)
now = datetime.datetime.now()
self.assertRegex(out, r"^\d{8}$")
self.assertEqual(out, format(now, "%Y%m%d"))
out = formatter.parse("{z|_now:%Y}").format_map(self.kwdict)
self.assertRegex(out, r"^\d{4}$")
self.assertEqual(out, format(now, "%Y"))
out2 = fmt.format_map(self.kwdict)
self.assertRegex(out1, r"^\d{4}-\d\d-\d\d \d\d:\d\d:\d\d(\.\d+)?$")
self.assertNotEqual(out1, out2)
def _run_test(self, format_string, result, default=None):
fmt = formatter.parse(format_string, default)
output = fmt.format_map(self.kwdict)