{"id":"35492ed8-a43e-4cd3-afac-4795a4519483","programming_language":"python","code":"class Stack:\n    def __init__(self):\n        self.items = []\n    def push(self, item):\n        self.items.append(item)\n    def pop(self):\n        return self.items.pop() if self.items else None","code_description":"Synthetic python code snippet demonstrating common patterns","task_type":"code_generation","difficulty_level":"beginner","dataset_source":"synthetic","quality_score":0.9,"is_tested":true,"has_bugs":false,"lines_of_code":7,"complexity_score":0.4,"functions_count":1,"dependencies":null,"tags":["algorithm","example"],"docstring":null,"source_url":null,"source_repository":null,"license":"CC0-1.0","author":"synthetic","created_at":"2025-10-25T07:54:31.450096Z","collected_at":"2025-10-25T07:54:31.450096Z"}