Pytest learn-setup/teardown

1, module-level setup_module/teardown_moudule (beginning at the beginning and end of the module, global)

2. Function-level setup_function/teardown_fucntion (only valid for function use cases (not in classes)) setup_method/teardown_method will be run every time the test method is run

3, class-level setup_class/teardown_class (only run once before and after the class (in the class))

4. Method level setup_method/teardown_method (starting at the beginning and end of the method (in the class)), each time the test method is run, setup_method/teardown_method will be run once