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gh-102567: Add -X importtime=2 for logging an importtime message for already-loaded modules (#118655)

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Co-authored-by: Adam Turner <9087854+aa-turner@users.noreply.github.com>
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Noah Kim 2025-05-05 20:03:55 -04:00 • committed by GitHub
parent e6f8e0a035
commit c4bcc6a778
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15 changed files with 166 additions and 44 deletions
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18
Lib/test/test_cmd_line.py
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@ -1158,6 +1158,24 @@ class CmdLineTest(unittest.TestCase):
res = assert_python_ok('-c', code, PYTHON_CPU_COUNT='default')
self.assertEqual(self.res2int(res), (os.cpu_count(), os.process_cpu_count()))
def test_import_time(self):
# os is not imported at startup
code = 'import os; import os'
for case in 'importtime', 'importtime=1', 'importtime=true':
res = assert_python_ok('-X', case, '-c', code)
res_err = res.err.decode('utf-8')
self.assertRegex(res_err, r'import time: \s*\d+ \| \s*\d+ \| \s*os')
self.assertNotRegex(res_err, r'import time: cached\s* \| cached\s* \| os')
res = assert_python_ok('-X', 'importtime=2', '-c', code)
res_err = res.err.decode('utf-8')
self.assertRegex(res_err, r'import time: \s*\d+ \| \s*\d+ \| \s*os')
self.assertRegex(res_err, r'import time: cached\s* \| cached\s* \| os')
assert_python_failure('-X', 'importtime=-1', '-c', code)
assert_python_failure('-X', 'importtime=3', '-c', code)
def res2int(self, res):
out = res.out.strip().decode("utf-8")
return tuple(int(i) for i in out.split())