Upgrading from Python 3.6.8 to Python 3.9.0 and executing unit tests revealed a significant change in the behavior of re.split().
but looking at the relevant documentation — Changelog <https://docs. python.org/3/whatsnew/changelog.html> and re - Regular expression operations - Python 3.9.4 documentation <https://docs.python.org/3/library/re.html?highlight=re%20search#re.split> yet no change is found. number = '123'def test_Asterisk_quantifier_with_capture_group(self): resultList = re.split(r'(\d*)', self.number) if platform.python_version() == '3.6.8': self.assertEqual(resultList,['', '123', '']) else: self.assertEqual(resultList,['', '123', '', '', '']) I feel that this is clearly not in line with the description of the function in the split documentation, and it is also strange that after replacing * with +, the behavior is still the same as in 3.6.8. 1. why is this change not in the documentation? Is it because I didn’t find it? 2. Why did the behavior change this way? Was a bug introduced, or was it a bug fix? -- https://mail.python.org/mailman/listinfo/python-list