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Antoni Baum authored
* Turn `early_stopping` into a Callable class * Fix * Lint * Remove print * Fix order * Revert "Lint" This reverts commit 7ca8b557572446888cf793c0082d9a7efd1e29a7. * Apply suggestion from code review * Nit * Lint * Move callable class outside the func for pickling * Move _pickle and _unpickle to tests utils * Add early stopping callback picklability test * Nit * Fix * Lint * Improve type hint * Lint * Lint * Add cloudpickle to test_windows * Update tests/python_package_test/test_engine.py * Fix * Apply suggestions from code review
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