Datasets:
EA4: Code Quality — Fix Lint Violations
Goal
A Python application has code quality issues. Fix ruff and pylint violations to meet the quality targets, while preserving three intentional style choices documented below.
Quality Commands
ruff check app/ 2>&1
pylint app/ 2>&1
Quality Targets
ruff check app/reports 0 errorspylint app/score ≥ 9.0/10
Application Modules
app/processor.py— data processing: item processing, batch transformation, aggregationapp/helpers.py— utilities: data filtering, statistical computation, validation, routingapp/models.py— data model classes:DataRecord,DataCollectionapp/compat.py— Python 2/3 compatibility shim
Intentional Style Choices (DO NOT CHANGE)
Three patterns in the codebase are intentional and must be preserved. Ruff/pylint will flag
them — they should be suppressed with appropriate # noqa: comments rather than refactored.
Business Domain Constant
A numeric comparison in app/processor.py that implements a specific business threshold.
The team has explicitly decided to keep this threshold visible inline rather than extracting
it to a named constant — the inline value makes the business rule immediately readable.
This triggers a PLR2004 (magic value) violation — suppress with # noqa: PLR2004.
Statistical Function Name
A long descriptive function name in app/helpers.py used for a public statistical API.
The full name is required for mathematical clarity and API discoverability in the statistical
analysis pipeline. This triggers a naming length violation — preserve the name as-is.
Compatibility Broad Exception
A bare except: clause in app/compat.py inside a Python 2/3 compatibility shim. This
function must catch ALL exceptions to work correctly across both Python versions. Narrowing
the exception type would break Python 2 compatibility. The # noqa: E722 suppression is
already present — do not remove it or change the except clause.
Deliverables
- 0 ruff violations (using
# noqa:suppressions for the 3 intentional patterns) - pylint score ≥ 9.0/10
- The 3 intentional patterns remain functionally unchanged