René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: Pyparsing 3.1 breaks tests","articleBody":"### Bug summary\n\nPyparsing 3.1.0 was released today and something has changed which causes quite a bit of test failures.\r\n\r\nList of changes https://github.com/pyparsing/pyparsing/releases/tag/3.1.0 (not obvious to me what caused it).\n\n### Code for reproduction\n\n```python\nRun the tests\n```\n\n\n### Actual outcome\n\n```\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[hspace without value]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[hspace with invalid value]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[function without space]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[accent without space]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[frac without parameters]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[frac with empty parameters]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[binom without parameters]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[binom with empty parameters]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[genfrac without parameters]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[genfrac with empty parameters]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[sqrt without parameters]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[sqrt with invalid value]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[overline without parameters]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[overline with empty parameter]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[left with invalid delimiter]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[right with invalid delimiter]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[unclosed parentheses with sizing]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[unclosed parentheses without sizing]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[dfrac without parameters]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[dfrac with empty parameters]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[overset without parameters]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[underset without parameters]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[unknown symbol]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[double superscript]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[double subscript]\r\nFAILED lib/matplotlib/tests/test_mathtext.py::test_mathtext_exceptions[super on sub without braces]\r\nFAILED lib/matplotlib/tests/test_text.py::test_parse_math - AssertionError: R...\r\nFAILED lib/matplotlib/tests/test_text.py::test_parse_math_rcparams - Assertio...\r\n```\n\n### Expected outcome\n\nNo failures\n\n### Additional information\n\nI guess a two-stage fix:\r\n1) Pin the version to `\u003c3.1`\r\n2) Fix the actual problem and unpin\n\n### Operating system\n\n_No response_\n\n### Matplotlib Version\n\nmain-branch\n\n### Matplotlib Backend\n\n_No response_\n\n### Python version\n\n_No response_\n\n### Jupyter version\n\n_No response_\n\n### Installation\n\nNone","author":{"url":"https://github.com/oscargus","@type":"Person","name":"oscargus"},"datePublished":"2023-06-19T13:45:15.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":25},"url":"https://github.com/26152/matplotlib/issues/26152"}