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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Colorize tests fail on iOS Xcode 16.2","articleBody":"# Bug report\n\n### Bug description:\n\nThe iOS buildbot was recently updated to run on Sequoia, with Xcode 16.2 and an iOS 18.2 simulator. This has revealed a set of test failures that weren't occurring on Xcode 15.4 and iOS 17.2:\n\nThe failures are all in the `test__colorize` tests:\n```\ntest_colorized_detection_checks_for_environment_variables (test.test__colorize.TestColorizeFunction.test_colorized_detection_checks_for_environment_variables) ...  \n  test_colorized_detection_checks_for_environment_variables (test.test__colorize.TestColorizeFunction.test_colorized_detection_checks_for_environment_variables) (env={}, fallback=True) ... FAIL  \n  test_colorized_detection_checks_for_environment_variables (test.test__colorize.TestColorizeFunction.test_colorized_detection_checks_for_environment_variables) (env={'FORCE_COLOR': ''}, fallback=True) ... FAIL  \n  test_colorized_detection_checks_for_environment_variables (test.test__colorize.TestColorizeFunction.test_colorized_detection_checks_for_environment_variables) (env={'NO_COLOR': ''}, fallback=True) ... FAIL  \n  test_colorized_detection_checks_for_environment_variables (test.test__colorize.TestColorizeFunction.test_colorized_detection_checks_for_environment_variables) (env={'PYTHON_COLORS': 'x'}, fallback=True) ... FAIL  \n  test_colorized_detection_checks_for_environment_variables (test.test__colorize.TestColorizeFunction.test_colorized_detection_checks_for_environment_variables) (env={'PYTHON_COLORS': ''}, fallback=True) ... FAIL  \n  test_colorized_detection_checks_for_environment_variables (test.test__colorize.TestColorizeFunction.test_colorized_detection_checks_for_environment_variables) (env={'PYTHON_COLORS': '1'}, fallback=True) ... FAIL  \n  test_colorized_detection_checks_for_environment_variables (test.test__colorize.TestColorizeFunction.test_colorized_detection_checks_for_environment_variables) (env={'PYTHON_COLORS': '0'}, fallback=True) ... FAIL  \n  test_colorized_detection_checks_for_environment_variables (test.test__colorize.TestColorizeFunction.test_colorized_detection_checks_for_environment_variables) (env={'PYTHON_COLORS': 'x'}, fallback=True) ... FAIL  \n  test_colorized_detection_checks_for_environment_variables (test.test__colorize.TestColorizeFunction.test_colorized_detection_checks_for_environment_variables) (env={'PYTHON_COLORS': ''}, fallback=True) ... FAIL\ntest_colorized_detection_checks_for_file (test.test__colorize.TestColorizeFunction.test_colorized_detection_checks_for_file) ... FAIL\ntest_colorized_detection_checks_for_std_streams (test.test__colorize.TestColorizeFunction.test_colorized_detection_checks_for_std_streams) ... FAIL\n```\nExample failed run: https://buildbot.python.org/#/builders/1380/builds/2619\n\nThis is likely due to a conflict between the iOS testbed forcing `NO_COLOR`, because an iOS log stream doesn't support ANSI logging sequences - but it's not clear why this didn't manifest previously.\n\n### CPython versions tested on:\n\nCPython main branch\n\n### Operating systems tested on:\n\nOther\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-130333\n* gh-130334\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/freakboy3742","@type":"Person","name":"freakboy3742"},"datePublished":"2025-02-19T05:52:50.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/130293/cpython/issues/130293"}