2e","label":null,"text":"Instance attributes always override class attributes.","isCorrect":false},{"id":"1cdcb40a-f930-49e7-b1ad-f0cc72e71bee","label":null,"text":"The attribute is immutable.","isCorrect":false},{"id":"bc4ffbe5-45ba-44d1-b0b2-f76abee7d66c","label":null,"text":"Class attributes are shared among all instances of a class.","isCorrect":true},{"id":"94f49537-92bb-4841-a54f-63dde4642815","label":null,"text":"Python uses copy-on-write for attribute access.","isCorrect":false}],"domainName":"Object-Oriented Programming","domainSlug":"oop"},{"id":"062eafd7-62f1-4666-8a38-0ee6a343c2e8","slug":"refer-to-the-exhibit-what-is-the-output-note-actual-mro-teiqj","questionText":"Refer to the exhibit. What is the output? (Note: actual MRO may vary; choose the one that matches Python 3 C3 linearization.)","explanation":"Python 3 uses C3 linearization to compute the Method Resolution Order (MRO). For class D inheriting from B and C, which both inherit from A, the MRO is D, B, C, A, object. This satisfies the monotonicity and local precedence order: B comes before C (as per D's bases), and A is last among the user-defined classes, with object always appended.","domainId":"436b3e49-1903-487c-b11e-2a225d35661a","difficulty":"hard","questionType":"multiple_choice","pbqConfig":null,"exhibitText":"class A:\n def method(self):\n return \"A\"\n\nclass B(A):\n def method(self):\n return \"B\"\n\nclass C(A):\n def method(self):\n return \"C\"\n\nclass D(B, C):\n pass\n\nprint(D.__mro__)","options":[{"id":"a11e3c09-f80b-4f2f-a4ce-83c97e99bae0","label":null,"text":"(, , , )","isCorrect":false},{"id":"bb69da03-4684-48ab-97e7-863a68fb29e8","label":null,"text":"(, , , , )","isCorrect":true},{"id":"571f18e3-9172-46fb-a363-1569a362e1b3","label":null,"text":"(, , , , )","isCorrect":false},{"id":"34f37ec3-5d77-477a-b8d3-1dc9cf6e345c","label":null,"text":"(, , , , )","isCorrect":false}],"domainName":"Object-Oriented Programming","domainSlug":"oop"},{"id":"aa1fdd2e-d59d-4fa9-a6ae-6a91e2bf9bb8","slug":"which-two-of-the-following-are-valid-uses-for-the-name-9qk7h","questionText":"Which TWO of the following are valid uses for the '__name__' variable in a Python module?","explanation":"The '__name__' variable is set to the string '__main__' when the module is executed directly as the main program (e.g., via 'python module.py'). This allows a module to include code that runs only when it is the entry point, not when it is imported by another module. The check is typically done with 'if __name__ == \"__main__\":'.","domainId":"c5ed8ab7-bf1c-461f-ba94-4b9f0ffbefbf","difficulty":"easy","questionType":"multi_select","pbqConfig":null,"exhibitText":null,"options":[{"id":"69ad9e8d-58c6-441f-aa00-c4f3eca9b854","label":null,"text":"To get the file path of the module.","isCorrect":false},{"id":"b8c79e50-bfc8-47c7-8df6-410ac2ed6200","label":null,"text":"To control which names are exported when using 'from module import *'.","isCorrect":false},{"id":"31ad4871-f93f-49b5-9e2c-8d904a009476","label":null,"text":"To determine which module imported it.","isCorrect":false},{"id":"3a9a4b34-eaeb-4bc0-9446-58e1dc330adc","label":null,"text":"To check if the module is being run as the main program.","isCorrect":true},{"id":"708189fa-5381-43c6-944e-675017985c81","label":null,"text":"To get the fully qualified name of the module (e.g., 'package.module').","isCorrect":true}],"domainName":"Modules and Packages","domainSlug":"modules-packages"},{"id":"6475bfe5-6491-4822-a6ac-8c3c35630a48","slug":"a-programmer-is-writing-a-script-to-generate-sql-queries-saf-rrko2","questionText":"A programmer is writing a script to generate SQL queries safely. They need to escape single quotes in user-