Edge#

class langchain_core.runnables.graph.Edge(source: str, target: str, data: Stringifiable | None = None, conditional: bool = False)[source]#

Edge in a graph.

Parameters:

source (str) – The source node id.
target (str) – The target node id.
data (Stringifiable | None) – Optional data associated with the edge. Defaults to None.
conditional (bool) – Whether the edge is conditional. Defaults to False.

Create new instance of Edge(source, target, data, conditional)

Attributes

`conditional`	Alias for field number 3
`data`	Alias for field number 2
`source`	Alias for field number 0
`target`	Alias for field number 1

Methods

`copy`(*[, source, target])	Return a copy of the edge with optional new source and target nodes.
`count`(value, /)	Return number of occurrences of value.
`index`(value[, start, stop])	Return first index of value.

copy(*, source: str | None = None, target: str | None = None) → Edge[source]#

Return a copy of the edge with optional new source and target nodes.

Parameters:

source (str | None) – The new source node id. Defaults to None.
target (str | None) – The new target node id. Defaults to None.

Returns:

A copy of the edge with the new source and target nodes.

Return type:

Edge

count(value, /)#: Return number of occurrences of value.

index(value, start=0, stop=9223372036854775807, /)#

Return first index of value.

Raises ValueError if the value is not present.