René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Allure step placeholder fails when accessing dataclass attribute `data.name`","articleBody":"With the usage provided in [step_placeholder.rst](https://github.com/allure-framework/allure-python/blob/master/allure-pytest/examples/step/step_placeholder.rst), I used Allure step placeholders to reference a property on a Python `dataclass` passed as a function argument. Using `data.name` in the step title raises an `AttributeError` during step rendering.\n\n#### Expected behavior\n\nAllure should resolve `data.name` and display the value of the `name` attribute in the step title like Create opportunity: Auto QA Example\n\n#### Actual behavior\n\nAllure raises an exception before the step executes: `AttributeError: 'str' object has no attribute 'get('name)'`\n\nMWE of dataclass used\n\n```python\n\n@dataclass\nclass OpportunityData:\n    \"\"\"Data class for opportunity test data.\"\"\"\n    \n    name: str\n    expected_revenue: str\n    email: Optional[str] = None\n    phone: Optional[str] = None\n    state: Optional[str] = None\n    street: Optional[str] = None\n    zip_code: Optional[str] = None\n```\n\nFactory function for Opportunity creation\n```python\ndef create_opportunity_data() -\u003e OpportunityData:\n    \"\"\"Factory function to create OpportunityData for tests.\"\"\"\n\n    \n    data = OpportunityData(\n        name=f\"Auto QA {fake.company()}\",\n        expected_revenue=_generate_expected_revenue(),\n        email = fake.email()\n        phone = fake.phone_number()\n        street = fake.street_address()\n        zip_code = fake.zipcode()\n        state=fake.random_element(STATE_OPTIONS),\n    )\n    \n   return data\n```\nTest Opportunity file\n```python\n@allure.title(\"Test opportunity creation with all main fields\")\n@allure.testcase(\"CRM-002\")\n@pytest.mark.regression\ndef test_opportunity_creation_full(opportunity_page: OpportunityPage, app_instance: App) -\u003e None:\n    \n    # ARRANGE\n    data = create_opportunity_data(full=True, opportunity_type=\"CRM Multi-Year\")\n    \n    # ACT\n    opportunity_page.create_opportunity(data)\n    \n    # ASSERT\n    opportunity_page.verify_opportunity_saved(data.name)\n\n```\nOpportunity Page class\n```python\n    @allure.step(\"Create opportunity: {data.name}\")\n    def create_opportunity(self, data: \"OpportunityData\", base_url: str) -\u003e Self:\n        \"\"\"High-level method to create an opportunity with provided data.\"\"\"\n        \n      \n        # Fill main form fields\n        self.fill_opportunity_name(data.name)\n        self.fill_expected_revenue(data.expected_revenue)\n\n```\n\nCall stack\n\n```\napp_instance = \u003csrc.app.App object at 0x7f9f3034f8c0\u003e\n\n    @allure.title(\"Test opportunity creation with minimal fields\")\n    @allure.testcase(\"CRM-001\")\n    @pytest.mark.smoke\n    def test_opportunity_creation_flow(opportunity_page: OpportunityPage, app_instance: App) -\u003e None:\n    \n        # ARRANGE\n        data = create_opportunity_data(opportunity_type=\"Monitoring\")\n    \n        # ACT\n\u003e       opportunity_page.create_opportunity(data, app_instance.base_url)\nE       AttributeError: 'str' object has no attribute 'get('name)'\n```\n\n#### Notes\n\n* `data` is a dataclass instance, not a dict.\n* Attribute access works inside the function body.\n* The error occurs during Allure step title formatting.\n\n\n#### Environment\n\n* Python 3.12\n* allure-pytest==2.15.2\n* pytest==8.4.2\n* pytest-playwright==0.7.2\n* mypy==1.19.0\n* mypy-extensions==1.1.0\n\nDoes allure step placeholders accept only strings?\n","author":{"url":"https://github.com/recluzegeek","@type":"Person","name":"recluzegeek"},"datePublished":"2026-01-07T11:14:28.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/896/allure-python/issues/896"}