# ``igraph`.`drawing`.`metamagic`.`AttributeSpecification``

class documentation

`class AttributeSpecification: (source)`

Constructor: `AttributeSpecification(name, default, alt_name, transform, func)`

View In Hierarchy

Class that describes how the value of a given attribute should be retrieved.

The class contains the following members:

- `name`: the name of the attribute. This is also used when we are trying to get its value from a vertex/edge attribute of a graph.
- `alt_name`: alternative name of the attribute. This is used when we are trying to get its value from a Python dict or an `igraph.Configuration` object. If omitted at construction time, it will be equal to `name`.
- `default`: the default value of the attribute when none of the sources we try can provide a meaningful value.
- `transform`: optional transformation to be performed on the attribute value. If `None` or omitted, it defaults to the type of the default value.
- `func`: when given, this function will be called with an index in order to derive the value of the attribute.

Method | `__init__` | Undocumented
Class Variable | `__slots__` | Undocumented
Instance Variable | `accessor` | Undocumented
Instance Variable | `alt_name` | Undocumented
Instance Variable | `default` | Undocumented
Instance Variable | `func` | Undocumented
Instance Variable | `name` | Undocumented
Instance Variable | `transform` | Undocumented

def __init__(self, name, default=None, alt_name=None, transform=None, func=None): (source)

Undocumented

__slots__: `tuple[str, ...]` = (source)

Undocumented

accessor = (source)

Undocumented

alt_name = (source)

Undocumented

default = (source)

Undocumented

func = (source)

Undocumented

name = (source)

Undocumented

transform = (source)

Undocumented