Named argument
A named argument is a function or command argument supplied by explicitly associating its value with a parameter name rather than relying solely on position.
Python Workout, Second Edition
A keyword argument is an argument passed by associating a value with a parameter name in a function call.
- How it is used
- Uses named arguments to make flexible functions accept optional values, attributes, menu options, and query criteria.
- How deep it goes
- Explains name-value syntax, default parameters, kwargs dictionary construction, iteration, and practical transformations.
- Examples
- Demonstrates XML attributes, dynamically constructed menus, and animal queries filtered by color or legs.
- What you can do after
- Apply it via Python function calls to design extensible interfaces and process caller-supplied options by name.
Read how Python Workout, Second Edition explains named argument →
Python How-To
A keyword argument is a function argument supplied by associating an explicit parameter name with its value.
- How it is used
- Uses named arguments to make reusable functions easier to call and understand.
- How deep it goes
- Explains identifier-based matching, ordering rules, flexible **kwargs, and invalid names without descending into interpreter internals.
- Examples
- Demonstrates multiply_numbers calls, print's named options, create_report with grades, and valid or invalid **kwargs calls.
- What you can do after
- Apply named arguments in function calls, combine them correctly with positional arguments, and define flexible interfaces with **kwargs.
Kotlin in Action, 2E
Named-argument syntax specifies function or constructor arguments by writing each argument's parameter name explicitly.
- How it is used
- Clarifies Kotlin function and constructor calls, especially those with many parameters or Boolean flags.
- How deep it goes
- Explains partial naming, complete-call reordering, default-value combinations, IDE refactoring, and Java annotation restrictions.
- Examples
- Uses joinToString calls, Person construction, and Kotlin-versus-Java annotation applications.
- What you can do after
- Apply named arguments to make Kotlin function, constructor, and annotation calls more readable and maintainable.
Related concepts
- positional argumentcontrasts with · A positional argument is a function argument associated with a parameter according to its ordinal position in the call rather than its name.
- **kwargsused by · **kwargs is Python function-parameter syntax that collects arbitrary keyword arguments into a dictionary keyed by their names.
- functionuses · A function is a callable program unit that performs an operation, may accept inputs, and can produce a result or side effect.
- required argumentincludes · A required argument is an input value that must be supplied for a function, command, operation, or request to be valid.
- format methodused by · A format method is an API operation that produces a formatted representation by substituting supplied values into a formatting specification.
- parameter bindingcontrasts with · Parameter binding is PowerShell's process of mapping supplied arguments or pipeline objects to a command's parameters.
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