{"categories":[{"label":"Software Development","url":"https://skillfed.io/packages/category/software-development/17"}],"enrichment":{"capability":"Provides a `Nil` singleton object to represent missing or undefined values in situations where `None` is itself a valid data value and cannot be used as a sentinel.","skillfed_tags":["sentinel-value","type-hints"],"use_cases":["Default function parameters: distinguish between an explicit `None` and an unspecified argument using `Nil` as the default.","Data model fields: represent missing or undefined values in classes or dataclasses where `None` is a valid stored value.","Optional configuration: mark configuration values as explicitly unset (Nil) versus set to None or a default.","Type-hinted optional values: use `Nilable[T]` in function signatures to document that a value can be a type or Nil.","Sentinel-based control flow: use identity checks (`is Nil`) to branch on whether a value was explicitly provided."],"what_it_does":"NilType provides a `Nil` singleton\u2014a distinct sentinel value for representing the absence of data when `None` itself is a meaningful value in your data model. This solves a real problem in Python: when your domain allows `None` as a valid entry (e.g., a database field that can legitimately store null), you need a separate marker to mean 'no value provided' or 'undefined'. The package exports `Nil` for identity checks and a `Nilable` type alias for type annotations.\n\nThe typical use case is function signatures where you want to distinguish between an explicit `None` argument and no argument at all. For example, a `get()` function can use `Nil` as its default parameter value, then check `if default is not Nil` to know whether the caller passed something. The package is minimal\u2014no dependencies, pure Python, and typed\u2014making it a lightweight addition to any codebase that needs this pattern.","worth_installing":"Yes, if you have a codebase where `None` is a valid data value and you need a distinct sentinel. The package is tiny, has no dependencies, is MIT-licensed, and solves a real semantic problem. Dormant maintenance is not a concern for a single-purpose utility with no external dependencies. Install it if the pattern fits your domain; skip it if you can use a different sentinel (e.g., a custom class) or if `None` is always sufficient."},"id":"niltype","links":{"html":"https://skillfed.io/packages/niltype","md":"https://skillfed.io/packages/niltype.md","pypi":"https://pypi.org/project/niltype/"},"maintenance":{"status":"dormant"},"meta":{"latest_release":"2024-09-21","license_spdx":null,"license_treatment":"permissive","name":"niltype","python_support":"supports_current","summary":"A singleton Nil object to represent missing values when None is a valid data value"},"popularity":{"monthly_downloads":100117,"position":13001,"tier":"top_15000"},"security":{"n_vulnerabilities":0},"version":"1.0.2"}